A white lie leads Catalina into a big predicament. Shocked by the news of her ex-boyfriend's engagement, Lina decides to pretend she has a relationship with an imaginary American lover. With only four weeks left until her sister's wedding, she must find a fake boyfriend to accompany her to the event.

She and her friend Rosie explore all options, but the answer seems hidden in the least likely candidate: Aaron Blackford. The arrogant American who has tormented her since her first day at work, provoking an endless desire for revenge. However, their trip to Spain allows her to discover a different side of this man, a new character who is kind, friendly, and affectionate.