该剧改编自西班牙作家哈维尔·卡斯蒂略的畅销小说。
　　一年级住院医生克拉拉·梅洛因严重的心脏病发作不得不接受心脏移植手术。在康复期间，她产生了想要了解捐献者的强烈愿望，这使她来到一个偏远的小镇，试图了解那个将心脏捐给她的年轻人的生活。克拉拉因此深入这个充满秘密的小镇，这里隐藏着长达二十年的谜团，而就在她到达的当天，一名婴儿在公共公园失踪了。

 暗藏惊天秘密的一家人在马德里重新开始。在那里，新的人际关系使他们的计划变得复杂，而这家人也开始遭受往事的困扰。

　　La Última tells the story of Candela, a young woman who works at a logistics company and is pursuing her dream of becoming a singer. Her life changes when Fede Ariza, an important record company executive, hears her sing in a bar. That same night, Candela meets up with Diego, an old classmate from high school who is fighting to become a professional boxer. In their story, they will overcome obstacles and disappointment, and experience hope, love, and friendship.