Baby Daddy follows Ben, a 20-year-old man who lives the life of a bachelor in New York City with his friend Tucker and his brother, Danny. Their lives are reversed when they return home one day to find a little girl left at the door of a former friend of Ben. After much deliberation, Ben decides to raise his child with the help of his friends and his protective and sometimes overworked mother, Bonnie, and his close friend, Riley.