Two siblings live by themselves in an apartment during their mother's hospitalization. This period of isolation will lead them to face each other's flaws and mend their relationship as they share the ordeals of becoming adults.

When 13-year-old seminarian Sacramento Santos joins a new order, he hopes to rise through levels of obedience to “Perfect Obedience”. But this progression proves to be more than just a spiritual journey. Sacramento is adopted by the order's founding father, Ángel de la Cruz, and over the course the year they fall in love and surrender to the most intense, blissful, and contradictory episode of their lives. Years later, older and wiser, Sacramento leaves the order regretting that episode, and he decides to seek justice from his old tutor.