Vicky's mom Betty and her boyfriend Sid announce their engagement and upcoming wedding in St. Martin and invite the entire family to join them. But when Sid goes too far with a stripper, Dave wonders whether or not to tell Betty and risk losing the free trip. Meanwhile, Kenny goes on a date with an ex-boyfriend of Hillary's, so Dave has an awkward conversation with him about gay safe-sex, while Hillary worries she may have a knack for turning men gay.

When it's revealed that Kenny and his date will be attending the school's Sadie Hawkins dance, he and his date are both banned from the event for not keeping with its traditions. This prompts an outraged Larry to lead protest against the discrimination, while Dave goes to the school to argue the case. Meanwhile, once Principal Fink discovers that Kenny's been living with the Golds, he tells Dave that he must inform Child Services so that Kenny can be put in foster care, unless Dave can convince Kenny's parents to let him come home.