Lisa Culver is concerned her son, James, will misbehave on his twenty-first birthday in Las Vegas. But with the power of Swap Mateand James' best friend, Chandlershe has the perfect plan to keep an eye on him! Chandler, meanwhile, believes he's getting the short end of the stick with Lisa's middle-aged body. Until he's invited by one of Lisa's friends, Rachel, to have some girls-only fun!