Dafne is convinced that her life is a mess, until she's hit with the startling realization that she's in love with her roommate and best friend, César, who is in a committed relationship with his girlfriend, Martina.

After an erotic dream about César complicates matters further, Dafne throws herself into the dizzying world of online dating; while she braves her first date, a freaked-out Martina shares some serious relationship concerns with César.

Eva develops a questionable attraction at her new job; the future of Dafne and Yerai's friendship hangs in the balance after she uncovers one of his deepest secrets.

At César's birthday celebration, a seemingly innocent party game brings secrets and tensions to the surface.

After Dafne gives Iñaki another chance, their date unexpectedly becomes an all-day affair; on the heels of Martina's shocking reveal, César tracks down Raquel for more information.

During the friends' night on the town, punches are thrown, hearts are exposed, and relationships are tested.