Maca (María Valverde), 30 years old and clumsy by nature, makes the most of life and strives to be happy. Maca's talent is wasted working as an assistant for an oppressive and terrifying fashion influencer and she spends her time with guys with whom she never manages to establish an emotional bond. Together with Jimena (Elísabet Casanovas) and Adriana (Susana Abaitúa), her two unique and lovable friends who are always ready to do whatever it takes to make their problems not seem so bad, Maca has managed to make Madrid a city where everything is possible. Everything seems to be going well until he-who-must-not-be-named comes back into her life. Leo (Alex González), the love and biggest mistake of her life, the man who tore her heart apart, obliterated her self-esteem and her faith in men, comes back into her life to turn everything upside down. Maca has tried to forget him, but now she has to accept that he has returned and face the emotions she has locked away to deal with the unforgettable memory of what could have been and never was. Old wounds are reopened and Maca will have to be brave and confront her conflicts, fears and insecurities in order to finally take control of her life.

故事发生在一艘横跨大西洋的豪华游轮上，乘客梦怀揣着各自的淘金梦从欧洲前往南美洲，希望能够在那里挖掘出他们辉煌的未来，其中就包括了情同手足的姐妹卡洛琳娜（伊万娜·巴克罗IvanaBaquero饰）和伊娃（阿莱扬德拉·奥利娃AlejandraOnieva饰）。一场凶杀案的发生打破了旅程的宁静，如果在这样一艘相当于密室的船上发生了谋杀案，那么也就意味着，凶手此时此刻就混在乘客们之中。奇怪的是，被害人的名字并没有出现在乘客名单上，船上的所有乘客亦表示他们并不认识受害人。随着调查的深入，越来越多的谜团被发掘了出来，每个乘客都有着他们各自的秘密。