Boyhood's End (2)

After Carmen disrupts Ben Franklin's kite experiment, Zack and Ivy must reverse all of her meddling to fix history and restore the present.

Zack creates a computer, the Zack Attack 20,000, which he believes will capture Carmen. However, when Carmen escapes with one of the treasures Zack had the computer protect, Ivy decides that she doesn't want to put her faith in it. The siblings go their own separate ways on this case, until Ivy is captured by Carmen.

Carmen and her band of pirates attempt to take over a submarine.

When Carmen steals famous gifts from around the world, Zack and Ivy are puzzled ‒ especially since her clues are in the form of a scavenger hunt. Suddenly, the detectives realize why Carmen is doing this. It's her birthday and she is stealing these famous gifts to give them to herself.

Carmen creates a large diamond to disrupt Acme's computer systems.

After rescuing two henchpeople from a fouled-up heist, Carmen decides to teach them the value of cooperation by stealing items related to teamwork.

The detectives are puzzled by what seems like an abrupt shift in Carmen's behavior as she begins trashing crime scenes. They discover that Carmen is being held prisoner by an imposter aiming to take her place as the queen of crime.

Carmen begins to steal items that she once saved from other criminals to lure her ex-partner, Suhara, out of retirement. Suhara joins Zack and Ivy to pursue Carmen, teaching Zack a lesson in the value of taking your time.

Famous Acme detective Lee Jordan comes to Zack and Ivy's assistance. But something is strange about him.

Lee Jordan turns to work for Carmen, and together they attempt "the biggest heist ever."