Luke and Lizzy, inseparable pals since childhood, decide to have a child together as friends.

Prudence moves into Luke and Lizzy's apartment -- along with a mess of belongings.

Luke and Prudence help Lizzy make a date with her secret crush.

Prudence tries to convince Luke and Lizzy to spice up their lives.

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.