Does Lucky Luke know what he’s getting himself into when he arrives at Froggy Town on a stormy night? As in many cities of the Wild West, a handful of men pursue the madcap dream of finding gold. Luke is just looking for a place where he can make a quick stop to replenish his tobacco supplies.

But he can’t refuse the request for help made by a committee of citizens to find the gold that was stolen the previous week from the poor miners. With the help of Doc Wednesday, Lucky Luke leads a dangerous investigation while facing up to the ruthless siblings – the Bones brothers.