Sebastian prepares to take the most important step of his life, marriage. However, what seemed to be the most romantic proposal in history, ends up becoming a nightmare when a video is revealed in which Lucia, his girlfriend, is cheating on him. With the help of his friends, Sebastian will have to rethink where his life is going if he wants to learn how to survive the single life.

Sebastian and Lucia's film doesn't come out as they'd hoped. Daniel confesses the truth to Mafer about his work. Fabiana feels like a fish out of water now that Gonzo's not chasing her anymore. He's changed his attentions to Sofia, a beautiful and intelligent woman who will make Fabiana jealous. Fish gets back with Melodi to help her recover after cosmetic surgery.

Sebastián and his friends arrive at Julieta's funeral. There, he has to spend time with her ex boyfriends and he finds out aspects of her that he didn't know. Daniel tries to reconcile with Mafer while they are harassed by a seller of funeral packages. Gonzalo, secretly in love with Fabiana, tries to be with her while Fish seeks to calm Melody's exaggerated cries.

Sebastian and Fish have signed up to dating lessons to learn how to hook up. Fabiana is trying to get a man she slept with to leave her apartment. He's refusing to break the rules and uses Gonzo's disclaimer as a backup. Gonzo will meet a trans woman who will make him question his own ideas about sexuality. Ultimately, Sebastian will find a path which leads him closer to Julieta.

Sebastian’s in love with Julieta. She suggests having breakfast with the group of friends to get to know them. They end up falling in love with her, welcoming her into the group. However, Fish is sure that Julieta is hiding something and doesn't want his best friend to end up heartbroken. Ultimately, Fish makes peace with Julieta when he realizes that she has genuine intentions with Sebastian.

Sebastián continues to endure Farré's trials to prove that he can be a serious actor and work with Lucía. Fish, seeks to demonstrate his commitment when he falls in love with a cam girl he wants to rescue. Mafer and Fabiana have the famous date with Jaureguiberri. Meanwhile, Daniel refuses to receive help from his father and will need to come up with ideas to pay for the wedding Mafer dreams of.

Sebastián and Fish are making efforts to find Julieta, the girl with the unicorn pin. Lucía prepares to shoot her first scene with Sebastián and goes to Fabiana to blow off some steam. Mafer and Daniel go out with their married friends, hiding from their single friends. Gonzalo is presented with the opportunity to invest in a new dating app and convinces Sebastián to try it out.

Sebastián, devastated by his breakup, joins a support group that promises him instant happiness. Fabiana comforts Lucía while she deals with Gonzo, to whom she mistakenly sends a nude. Gonzalo, obsessed with recovering the photo, resorts to absurd methods. Daniel debates whether or not to give the ring to Mafer. Fish, who broke up with Yaneth, joins Sebastián in his quest for happiness.

After receiving the news that Lucía will be in the film with him, Sebastián's friends organize a bachelor's welcome to encourage him to go out again in the world of dating. Sebastián accepts, but on one condition: ALL OF THEM HAVE TO GO. Between blind dates, diapers and a motorbike, the night ends up being one that Sebastián will never forget.

Julieta and Sebastián start a relationship. Fabiana accepts to do a three-way with Rocío and Carlos. Fish gets “Despechuga2”, a porn movie with an actor that seemed very much like Sebastián. Mr. Ariza orders Daniel an important presentation. Sebastián presents Julieta to his friends, who are invited by Fish to watch “Despechuga2”. Billy Boy sabotages Daniel´s presentation and he gets fired.