While looking for a new bar manager, Ben interviews his old crush Sam, and decides to exact "Ben-geance" on her for never noticing him in high school. However, once Ben sees Sam again, his plan to make her believe she got the job and then take it from her unravels. Bonnie decides marrying Brad means he's always going to be around causing her to reconsider their union. And Danny can't stomach Riley's cooking, but doesn't have the heart to tell her.

Baby Daddy follows Ben, a young man in his early 20s living the life of a bachelor in New York City with his buddy, Tucker, and his brother, Danny. Their lives are turned upside down when they come home one day to find a baby girl left on the doorstep by an ex-girlfriend of Ben's. After much deliberation, Ben decides to raise the baby with the help of his friends and his protective and sometimes over-bearing mother, Bonnie, and his close female friend, Riley.