Together with Chico and Trampi, Zagor helps Pickens free his wife, and eventually clashes with the kidnappers, where he meets the titular Mr. Smith, a strange man who is in fact the real reason for all this complication.
The Hidatsa tribe chooses a new chief between two rivals. According to an old tribal custom, rivals compete in a game with seven arrows, but one of them is wounded, so Zagor takes his place.
Zagor and Chico meet English archaeologist Dexter Green and his assistant Yambo, who are bringing the precious mummy of the last Sumerian king, Dumuzi, from Africa. But someone wants to steal the valuable finds on the way to the museum, and in the museum