Sebastián is a 33-year-old locksmith who has never really believed in long-term commitments. Not even with Mónica, his most steady relationship which has only lasted five months. When she reveals she is pregnant and that he is the likely father, Sebastián's world takes an unexpected turn : he begins to have strange visions about his clients whenever he's working on their doors. Some would call it a gift, but for Sebastián it feels more like a curse. Together with the help of Daisy, an unlikely assistant who very much wants to believe in his gift, he reluctantly sets out to use his talent for his own good.