On a group trip to the gym, Lizzy spies her secret crush, Kate and with the help of Luke, and Prudence, she initiates a conversation that leads to some plans for group bowling. Later, Luke and Prudence help get Lizzy an appointment with the best OB-GYN in the city and Lizzy is ecstatic - until they arrive to a big surprise. Meanwhile, Prudence realizes that Lizzy's pregnancy is making her feel left out and Leisha helps her explain her feelings to Luke.

On a group trip to Las Vegas, Luke, Prudence and Lizzy visit the chapel where Nick and Prudence got married - only to discover that it was a sham and their marriage is not legal. Lizzy takes it upon herself to plan a spectacular new wedding with a special surprise. However, the group is in for an even bigger surprise about Prudence's past life in England.