In the continuing Planet X91 series, Florian, Josh, and Clay must contend with a tsunami. Everything would have gone to plan if it wasn't for the shuttle being pushed from the roof of the Piper spaceship by the giant wave. If that wasn't bad enough the only way to save the shuttle from any more damage is to build a robot out of the many others which were aboard a deep shuttle craft many years earlier and had disappeared, reasons unknown. When the water from the Tsunami had receded, the robots litter the area. Three twisters form after the initial wave has come and gone. One of the twisters develops a large face in the vortex. It warns the teenagers to leave the planet. Clay takes matters into his hands and challenges the large face. He's sucked into the air. Knowing he's dead, Florian attempts suicide. Josh is the only one who can save them. Florian suspects the locked room with the green chair is either a time machine or can give visions of future events. Josh decides sitting in the green chair is the only way to save the other two. He has to put his life on the line just to find out if Florian might be right.