About to attend a prestigious fund-raising gala, Zack, JC, and, Gilby, can only get their hands on one tuxedo, forcing them to devise a time-share system that ultimately results in chaos.

A website purity test makes the rounds at the school and the ones filled out by Lisa and Nancy leads to various sexual dilemmas for Zack, Ted, Gilby and JC.

Zack believes he's gotten VD, and swears the guys to secrecy. When Ted gives Nancy a vague hint about Zack's condition, she and Lisa leap to the conclusion that Zack needs a kidney transplant