With Hillary's graduation only three weeks away, David and Vicky plan her graduation party, only to find out she may not even graduate because she's failing her gym class. Luckily, Dave is able to convince the principal to give her another chance, and volunteers to become Hillary's personal fitness trainer so she can pass. Meanwhile, Vicky is fed up with the lack of spontaneity in her and Dave's relationship, and she suggests that he get a vasectomy. Not wanting to go through the procedure alone, Dave suggests that Vicky get her tubes tied as well. However, both are in for a surprise when they try to outsmart one another. Meanwhile, with Mike's help, Larry and Kenny plan a school prank to get revenge on the seniors who have been harassing them.