Riley can't face the mess she has made out of her relationships with Ben and Danny, so she runs home to her mom's house in Jersey to hide from her problems. Once Ben realizes where Riley has gone, he stages a "friendervention" to get her to come home, but will Riley and Danny be able to move past their hurt feelings and go back to the way things were? Bonnie is thrilled when their next door neighbor, Evelyn, dies and plots to get the apartment listing. Once she discovers that Evelyn's granddaughter Ashley is a big Danny Wheeler fan and knows all his hockey stats, Bonnie tries to trade her son for the listing, despite the fact that Danny is still dating Robyn. Meanwhile, Tucker is determined to get his hands on the items Evelyn promised him.

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.