Where on Earth Is Carmen Sandiego?

When Carmen attempts to steal several items having to do with military strategies, she is foiled several times by ""The Tigress,"" a thief with a lot of high-tech weaponery of her own. Meanwhile, Zack and Ivy rush into tell Chief something, but he doesn't listen until Carmen starts to listen in on their frequency, so now they can't tell Chief their secret. Every time from that point forward, when Carmen tries to steal something, the Tigress takes it first. The Tigress lures Carmen to Antarctica, where she reveals herself to be Ivy in disguise. Carmen was ambushed by Acme detectives and taken away, but escapes when she steals Ivy's CO2 boots Zack invented, and rockets away.