Danny, Piper and Mitch, along with the surveillance room are taken hostage when thieves attempt to steal a rare stamp that is up for auction at the Montecito. Delinda and Cooper have an unexpected dinner and Delinda takes this opportunity to try to get to know their mysterious owner. Meanwhile, Mike's mom discovers he has gotten married without her being there and is irate, but thanks to his quick thinking he convinces her that they haven't gotten married yet and that the big day is Saturday.