The Amazing Spider-Man (1978)

S1E2 The Deadly Dust (2)

A handful of students, outraged by the university's plutonium storage, decide to take matters into their own hands by stealing the material and constructing an atomic bomb to demonstrate its feasibility. When a cunning entrepreneur discovers the bomb's whereabouts and makes off with it, Spider-Man is called into action. He must race against time to locate the device and neutralize the threat before it can cause catastrophic damage.