Secret Agent OSS 117, Colonel Hubert Bonisseur de La Bath (Frederick Stafford) has his Alpine ski holiday interrupted to receive a briefing on a series of suicide attacks performed by trusted assistants of their targets that they blow up with themselves. Using the cover of a journalist named Hubert Delacroix, de La Bath flies to Brazil to meet his contact Thomas Ellis (Claude Carliez) who believes the killers have been drugged and hypnotised to perform their assassinations.