Vanheden and Dynamit-Harry attempt to free doctor Busé from prison, but accidentally liberate Herman Melvin instead. The doctor, now thinking like Sickan, has crafted a plan to rob the Swedish Mint, which he's written on Melvin's back. However, the heist goes awry, and they're left with a haul of Polish Zlotys instead of Deutsch-marks. In Poland, they discover that the mafia is eager to get their hands on the money, and Wall-Enberg is secretly working with them.
The Jonsson Gang's Greatest Robbery
Vanheden and Dynamit-Harry stumble into a thrilling adventure when they accidentally free Doctor Busé from prison, leading them into a complex scheme with Herman Melvin, a former Swedish Mint employee, who's concocted a daring heist with the doctor's cunning guidance.