Now that Riley knows the truth about Margot, she decides to find her biological father and uses her parents' high school yearbook as a guide. With a little help from Ben, Riley narrows down the possible candidates to David, the easygoing pastry chef, and Mark, the high-powered attorney. But despite some initial deception and old teenage rivalries resurfacing, Riley finally learns her father's identity. Meanwhile, Tucker is not happy about his parents' divorce and realizes the source of their problems is that Marshall is too uptight. But when Danny asks his mom to help Mr. Dobbs loosen up, Bonnie takes the challenge to a whole new level.
Ben is a twentysomething man, who becomes a surprise dad to a baby girl when she's left on his doorstep by an ex-girlfriend. Ben decides to raise the baby with the help of his mother Bonnie, his brother Danny, his best buddy Tucker and his close friend, Riley, who is harboring a secret crush on him.