The world's most famous travelling reporter is confused by some very strange goings on involving shattering glass and an packet of cigarettes. But can he solve the mystery in time to protect Professor Calculus? Windows, mirrors and chandeliers are spontaneously shattering and Tintin is left flummoxed. After a shooting and a break in, Tintin knows Calculus is in danger, but he has only one clue - an unusual packet of cigarettes. He has a mystery to solve. But can he do it before a terrible weapon falls into the wrong hands?