Zee and Roe head down south to intercept a drug lord, unaware that the government has sent a new, improved model of the Zeta robot project on their trail. Bucky gets hold of the info as well, and goes to meet them. Zeta's efforts to stop the drug lord are complicated by the killer robot on his trail, which possesses all of his abilities and superior strength as well. At the end Zeta manages to seemingly destroy it, but as they head back to the States, the tracking robot begins to repair itself.