Pu-239 (2006) on Netflix

Plot summary

Timofey Berezin works at an aging nuclear reprocessing plant in the closed city of Skotoprigonyevsk-16. When a critical malfunction threatens the facility, he steps in to stop it and is contaminated. His managers tell him the dose was survivable, accuse him of sabotage and suspend him without pay, but loyal coworkers help him learn the true figure: 1,000 rems, which leaves him only days. Determined to provide for his wife Marina and their young son, he takes a canister of weapons-grade plutonium salt and travels to Moscow. There he joins forces with Shiv, a small-time gangster, to find a buyer, and the pair move through the nightclubs, hotels and private palaces of the city's new underworld.