Stewie builds a DNA-altering machine that will allow him to remain smart forever, but the invention has the adverse effect and he instead transforms into what he should have always been - an actual baby.

Peter's non-stop sweating becomes a liability at his company, so his boss tells him to work from home. Meanwhile, after Stewie and Chris cause thousands of dollars in damage to an electronics store, the two create a fake Kickstarter campaign with Brian to pay back the money.