Yukai plot
The kidnappers of a corporate executive make an unusual ransom demand. They want a director of another company to move large bags of money through downtown Tokyo. When the director, an elderly man, nearly dies of exhaustion, a second, and eventually a third, old and greedy director is ordered to do the same. Police Detective Tsuba and his younger partner Fuji, who have been assigned the case, are furious at the sight of this sad spectacle. They discover that the four directors have been involved in a major industrial accident.