The gang tries to figure out who the father of Dee's baby is by throwing a house party for all her former flings.
In an effort to get in shape, Charlie and Mac join a fitness group that turns out to be a new way of life.
A routine trip to a convenience store places the gang in the middle of an armed robbery; each member faces their reactions.
The team has to untangle the clues when the DNA evidence contradicts the confession of a woman who claims to have murdered her husband.
Peggy invites herself to Molly's bachelorette party after Mike's dad comes to town early. However, she turns it into a raucous affair.