Fleeing from Eric and Katie’s “repaired” Mini car, Marken and Plummer are arrested by a suspicious policeman; when they finally get released, they decide on a last desperate attempt at infiltrating Robert’s laboratory, by disguising themselves as government officials. Meanwhile, Robert resolves to deal with the spies himself: he begins spying on them, and when the duo leave Marken’s houseboat dressed in bowler hats and badly-fitting suits, he sneaks aboard and begins to search for information. Back at the lab, Eric has created a beautiful female robot counter-spy, Desiree, to deal with Marken and Plummer; programming Desiree as a ‘femme fatale’, Eric sends her to seduce the spies; but when she boards the houseboat, she meets Robert instead – and promptly tries to seduce him...