The third season of Back to 15 follows Anita’s college life as she tries to find a way to end her involuntary time travel. The third season is now streaming on Netflix.
Warning: This article contains heavy spoilers
Plot summary
When Anita deletes her Photoblog account, she inadvertently time-travels to the past once again. This time, she travels back to when she was eighteen.
Anita discovers that she and her friends, except for Henrique, are now students at the Federal University of Cafezinhos. Henrique and Spark are in a band and starting to gain fame.
Anita, a fine arts student, lives with Camila, Carol, Rafa, and Bruna. A girl named Jéssica, who initially does not get along with Bruna, also joins them.
Anita can no longer time-travel at will since her account was deleted. She keeps unintentionally traveling back and forth between the past and future, leading her to suspect that someone else around her is also a time traveler.
Whenever this mystery person uses their Photoblog account, Anita ends up time-traveling with them. Determined to put an end to her involuntary time-traveling, Anita tries to find this person.
In class, Anita befriends a girl named Filipa and defends her when a professor insults her talent. Meanwhile, Fabrício tries to get close to Filipa to make Anita jealous.
Three years have passed since Anita and Fabrício kissed. Although they still like each other, they never dated because Fabrício went off to college first.
Fabrício wants to date Anita, but she has not fully accepted her feelings for him. Joel also likes Anita, and she turns to him for help in understanding this timeline.
Joel, now a physics major, does not remember his time-traveling adventures with Anita, but he dreams about them, so Anita decides not to reveal her secret to him.
During one of her involuntary time travels to the future, Anita learns that she becomes a successful artist in this new timeline, but Joel dies in college.
When she returns to the past, she redoubles her efforts to find the other time traveler, hoping to find a way to save Joel’s life. Anita first suspects a boy named Whisky and then Jéssica, but neither turns out to be the time traveler.
Eventually, Anita confides in Joel about being a time traveler. Joel believes her because of his recurrent dreams and promises to help her.
Together, they decide to meet Denis Ferreira, the programmer of Photoblog. He is a recluse, and his house is in the woods.
As Carol overhears their plans, Anita is forced to bring all her friends along to camp near Denis’ house. Like Anita, each of her friends is dealing with their own struggles.
Henrique’s band is taking off, and his manager wants him to pretend he is single in public. The distance, busy schedules, and Henrique’s demanding career strain his relationship with Carol, leading to their breakup.
Carol, trying to move on from Henrique, starts hooking up with different boys and makes a move on Dom, a boy Camila, who is in an open relationship with Spark, likes.
Dom helped Camila with her manuscript, which allowed her to realize what was missing in her story. Camila now plans to finish it and apply for an artist scholarship.
However, she is reluctant to admit her feelings for Dom, fearing that he might not accept her for who she is. Carol fails to understand Camila’s perspective and has an argument with her.
Bruna is also facing issues in her love life. She and Luiza broke up because Luiza did not tell her about her decision to move to Canada.
Bruna found out about it much later, leading to their breakup. She then decided to drop out of the band and stop playing bass.
Bruna now likes Jéssica. She supports Jéssica as she stands up to a blackmailer, but she struggles to trust Jéssica until Luiza visits and apologizes.
On the camping trip, Fabrício and Anita have a heart-to-heart conversation and try to hook up, but they are interrupted by a fire. Additionally, Anita’s friends inadvertently lead Denis to the campsite.
Anita and Joel seize the opportunity to talk to Denis and find a solution to her involuntary time traveling, leaving Fabrício behind once again.
Denis, who believes time traveling is a curse, confides in them about his own experiences. He deleted his Photoblog account after losing control of his ability to time travel
When he deleted the account, he ended up passing the curse on to Anita, who realizes that when she deleted her account, the curse was transferred to another person—the other time traveler who is causing her to time travel with them.
Denis has a program, a virus that can bypass the firewall and permanently delete Photoblog, on a hard drive, which he plans to use to help Anita.
Before Denis can delete Photoblog and end the curse, a masked assailant, the other time traveler, attacks them, attempting to steal the hard drive but ultimately failing.
The next day, Anita finds herself stuck in a temporal loop, reliving the same twenty minutes over and over again, no matter how hard she tries to break free.
The Joel in her conscience tells her that the time traveling is not all about her, but Anita struggles to understand what he means.
Frustrated and with no way out of the loop, Anita lashes out at her friends, even going as far as to break Camila’s laptop, which contains her manuscript.
After storming off, Anita runs into Filipa, just as she has done in every cycle of the time loop. Filipa comforts her; she is the only friend Anita has left.
It is then that Anita realizes that Filipa smells familiar; Filipa smells just like the other time traveler she has been searching for.
The realization comes only after Filipa steals the hard drive that Anita and Joel were supposed to use to delete Photoblog forever.
Filipa destroys the hard drive, breaking the time loop. Photoblog had created the loop to ensure that the hard drive was destroyed.
Now that the loop is broken, time does not reset, and Anita’s friends do not forget what happened in the last twenty minutes, leaving Anita isolated without friends or support.
Ending explained:
The future Filipa wanted
Once the time loop ends, Filipa and Anita return to the future. In this timeline, Anita has no friends and is serving a prison sentence.
Filipa visits Anita and explains how she gained the power to time travel. After being insulted by her professor, Filipa dropped out of college, and her life was going nowhere.
One day, she logged into her Photoblog account at the exact moment Anita deleted hers and found herself in the past. This gave Filipa the chance to redo everything and change her future.
She kept traveling back and forth in time, determined to win the artist scholarship that two students, Anita being one of them, were going to receive.
Despite her efforts, Filipa could not achieve the same success as Anita in the future. Instead, by altering the past, she only ended up ruining Anita’s life.
Anita now offers to help Filipa achieve her goals, which would allow Anita to save her own life. She agrees to collaborate with Filipa, which is what Filipa had wanted all along.
Filipa travels back in time again. By working together, Anita and Filipa secure the artist scholarship and go on to become a successful duo in the future.
However, Anita still feels the absence of her friends. Realizing that she and Filipa are alone, Anita takes the opportunity to change her life when Filipa shares her password with her.
She logs into Filipa’s Photoblog account, travels to the past, changes the password, and locks Filipa in a room to prevent her from making things worse.
Regaining her friends’ support
Now that Anita has a chance to make things right, she confesses to the scholarship committee that she deliberately broke Camila’s laptop.
As a result, Anita is disqualified for trying to sabotage Camila’s chances. Camila might now be selected in her place, much to Anita’s relief.
Anita then gathers all her friends and apologizes to them. She explains that her erratic behavior was due to her lack of control over her life because of time traveling.
Although her friends find it hard to believe that she is a time traveler, they agree to help her end time traveling once and for all.
They plan to repair the hard drive Filipa destroyed, hack into Photoblog, and use the virus Denis programmed to delete the website.
As they work together, Carol and Camila mend their differences, Bruna asks Jéssica to be her girlfriend, and Camila finally overcomes her hesitation about dating Dom.
Furthermore, Carol decides to drop out of med school and not get back together with Henrique, choosing instead to discover what truly makes her happy.
The perfect future
Just as Anita prepares to upload a picture to return to the future and allow Joel to delete the website, Filipa arrives there to foil their plans.
Anita reasons with Filipa, explaining that their lives will never be perfect, no matter how hard they try, because something will always be missing.
Filipa eventually gives up, but Denis arrives there to stop Anita from deleting Photoblog. He warns that doing so will make her forget all her time-traveling adventures.
When Anita does not listen, he attacks Joel and Anita with a knife to protect his own memories. Fabrício steps in to save them and ends up getting stabbed.
Anita then realizes that she does not want a future without Fabrício, who promises to find her in the future. As she is running out of time, he urges her to leave.
Despite being worried about Fabrício, Anita returns to the future after uploading one last photograph, and Joel deletes Photoblog, making time traveling impossible.
In this final timeline, Anita is surrounded by her friends, including Filipa, who is now dating Joel. As Denis warned, Anita has forgotten all about time traveling.
However, she still feels a sense of relief and happiness when she sees Fabrício alive. Fabrício survived the stabbing and kept his promise to Anita. They are now dating.
In this future, Anita is content, knowing that her friends will always be by her side. The show ends with Anita celebrating Camila’s birthday with her friends.