Holmes and Yoyo set up to break up an extortion ring by testifying against the leader, but Yoyo can't testify because he's a robot and Holmes is afraid of the Mob.
While Holmes and Yoyo are being held hostage, Yoyo realizes that his battery is going dead, his circuits have shorted and his cooling system has broken down.
Yoyo and Maxine go undercover as a pair of honeymooners at a resort hotel, but the computerized Yoyo isn't programmed to respond romantically and Maxine isn't aware he's a robot.
After Holmes unwittingly tries to pass a counterfeit $20 bill, officials throughout the police department discover their wallets are filled with bogus money.