Childless wife Pete (mark Wahlberg) and Ellie (rose Byrne) buy a huge house with five bedrooms. After the comments of friends that the house is too big for two, Allie decided to adopt a child from the orphanage. She manages to persuade her husband to go to courses for future adoptive parents, where the couple accidentally meet a teenage girl Lizzie (Isabela Moner) and decide to take it for themselves, but it turns out that Lizzie has a younger brother and sister. Juan is clumsy, but passionate about sports, and Lita constantly argues with all family members. However, gradually Pete and Ellie manage to win the trust of children, despite a series of ridiculous situations in which new relatives fall.