The 999 was forced to land with water-borne inhabitants. Maetel and Tetsuro were escorted to meet with Waterpress, the ruler of the City. They were ambushed by a group of native Cheyenne Fish led by Geronimo, but escaped unharmed. Waterpress held Maetel and Tetsuro hostage, wanting to use the 999 to escape the planet with his people, since they have exhausted all of the planet's natural resources. Geronimo went on his own way after, an argument with his brother Navarro, leader of the Cheyenne, who preferred to live in peace with Waterpress. Waterpress was confronted by Geronimo, but he managed to trick and kill him. The 999 departed. Navarro and Suzie found Gernonimo's body.
"Ecoutez nos demandes ou nous vous ferons exploser !" Ce sont les mots qui sont venus d'une planète que même Maetel ne connaissait pas et qui ont forcé le 999 à effectuer un atterrissage non planifié. Les habitants de la planète vivent principalement sous l'eau. Celui qui a ordonné l'atterrissage était le président d'une race sous-marine qui avait émigré là-bas, Waterpress. Ces gens avaient pollué l'eau autant qu'ils le pouvaient et continuaient à lutter contre les autochtones de la planète, les Cheyenne Fish...
