In order to impress the other moms at school, Katie, Taylor and Oliver travel to New York to track down Nathan Fillion at a "Firefly" convention, so Katie can convince him to attend the school's spring gala.

When things start to fall apart at the last minute, Katie figures out a new way to make the spring gala a success. Meanwhile, Greg attempts to be a "fun dad" and winds up adopting a dog while Katie is occupied with the gala.