The babysitter cancels at the last minute, just as Gran is headed to the knitting conference. But tonight is the Bummy Rippa butt-fighting movie marathon. Zack and Deuce convince Gran to leave her butt behind as a sitter. At first she's a drill sergeant, but then the gang teaches her to let loose and it gets way out of control as she throws a party. The gang tries to save the house – to watch Bummy Rippa movies. / Zack is given a comic book by a weird mystic who claims he is the Chosen One. Eleanor thinks it?s completely ridiculous. Zack sets out to perform the three heroic feats as per the prophecy in the comic to prove her wrong. Or right. Too soon to say really.