The movie introduces us to Ainara (played by Blanca Soroa), a young, gifted and idealistic 17-year-old, who has to decide which subject to study at university. Or at least that’s what her family hopes she will do. However, the girl reveals the fact that she feels increasingly close to God and that she is prepared to embrace the life of a cloistered nun. This bombshell takes the whole family by surprise, causing a rift and constituting a litmus test for them all.