Coke Ennyday, the scientific detective, divides his own time in periods for "Sleep", "Eat", "Dope" and "Drink". In fact he's used to overcome every situation with drugs: consuming it to increase his energies or injecting it in his opponents to KO them. To help the police he discovers a contraband of opium (which he eagerly tastes) transported with "Leaping Fishes", and the blackmail of a mysterious man who wants to marry the "fish blower" girl. Will Coke be able to free the girl ?