Stephanie trades in cosmos for carpools when she marries a man with three kids. Her new role of full-time stepmom is challenging as she struggles to maintain some sense of her fun-loving, slightly irresponsible self.

Stephanie tells James that lying is acceptable if it makes someone's day better, which leads him to tell a huge lie. When everyone is called to the principal's office, the family must find a balance between honesty and shading the truth.

Stephanie's determined to bond with the kids and uses her love of music to do it. But by forcing them to take up an instrument against their will, Stephanie learns a very public and embarrassing lesson in parenting.