Homer and Marge go out for a much-needed romantic dinner and leave Bart, Lisa and Maggie with a babysitter named Ms. Botz. Bart becomes convinced that Ms. Botz is actually the Babysitter Bandit, a wanted criminal he saw on America's Most Wanted Armed and Dangerous. Bart turns out to be correct and when Ms. Botz ties him and Lisa up and attempts to rob the house, only Maggie can save them.