Safe cracker ""Fingers"" Maclaine (Stephen Strimpell in a dual role) is released from prison two days early. Anxious to see his girl Dolly and to meet the new criminal gang he's joining, Fingers soon finds himself again in police custody and finishing his sentence in a small hotel room. B.J. Reed has arranged for Stanley Beamish, armed with a supply of power pills, to infiltrate the gang of bank robbers while his double Fingers sits twiddling his thumbs. The real Fingers escapes and uses his underworld connections to find out what's going on. When he appears at the gang's hideout, the jig is up for Stanley. Our hero must use his wits, such as they are, to trick the crooks into letting him take a power pill so that he can turn the tables and send them all up the river.