Sickan, Vanheden as well as Rocky try to burglarize the Berns nightclub one night, yet Vanheden has actually made the mistake to invite his regularly drunk cousin, the old dynamiter Dynamite-Harry and also he damages the plan. Sickan is apprehended, and needs to spend 10 months in a tiny, secured space. When he is released, he has a brand-new plan, yet Rocky and Vanheden have actually determined to go straight. Along with Dynamite-Harry, Sickan prepares to burglarize a cold store, handled by their arch-enemy, Wall-Enberg.