Cory and Mr. Feeny are fed up with being considered safe and boring, so they decide to ride a dangerous roller coaster as a way to prove themselves.

Cory becomes upset when Topanga seems less interested in spending Valentine's Day with him than with consoling Amy about the last stages of her pregnancy, so when Topanga decides to cheer Amy up with a baby shower, Cory takes charge. Unfortunately his concept of a baby shower turns out to be a female version of a bachelor party, complete with a pizza-guy stripper, but the disgusted guests are distracted when Amy's waters break and she is rushed to hospital for a premature delivery -- one which the new Matthews baby may not survive. Meanwhile, Shawn is still on the road to nowhere; Morgan is less than happy about the arrival of a new sibling; and Jack and Rachel worry about the effect of revealing their new relationship to Eric -- who announces he already knows, and is moving out.

While everyone restlessly awaits newly born Joshua Matthews, Cory's continued vanity alienates Topanga, who considers herself a member of the Matthews family.