Zach and Agent 66 go undercover as doctors to investigate a Kaos-funded hospital. Meanwhile, Max almost forgets his anniversary.

Zach has a new girlfriend, Jessica, whom Agent 66 immediately dislikes. As it turns out, she's really the daughter of Siegfried, who is trying to lure Max into a trap in order to reignite the Cold War.

Someone tries to hijack a plane with the Smart family onboard.

Zach and 66 try to stop a Kaos plot to brainwash teenyboppers with a hypnotic pop single.

A Kaos agent, The Brain, kidnaps and brainwashes 66 in an assassination plot on African President Mazabuka.

Zach and 66 investigate a fixed casino, which happens to be run by Kaos. Upon eyewitnessing a murder, Zach finds his own life at stake.

Undercover at a fashion show, Zach Smart and Agent 66 investigate a Kaos attempt to steal an indestructable fabric.