A strange disturbance in Tokyo upturns the ground and shakes the buildings as if something huge is moving beneath the foundations of the city. In the canal of the Imperial Palace, a large tentacle-like vine called Juran appears, frightening passersby. Following this incident, Jun, Ippei and Yuriko witness an underground attack on humans, as the vines try to suck blood from their victims. Dr. Ichinotani suspects that a giant plant has taken root beneath Tokyo.

Jun, Yuriko, lppei and Dr. Ichinotani visit a laboratory near Mount Isa to learn more about the experiments of a researcher named Kimura. Kimura has developed a special nutrient called Honey Zelion, which he has fed to colonies of bees. Following an incident of vandalism at the greenhouse where the bees are stored, a giant mole called Mongula appears, terrorizing the farmland community.

Residents are horrified when reports of skeletal remains and giant footprints lead them to believe that an abominable snowman may be lurking in the nearby mountains.

Jun and the others attend a perforniance by Akanuma the Magician During the act, a young girl named Lily is enclosed inside a box and her ghostly spirit appears in the air, separated from her body. At the conclusion, her body and spirit are rejoined and she emerges from the box, generating applause from the audience.

Returning from a pilot's conference in Hong Kong, Jun and Ippei's flight aboard a supersonic passenger jet is suddenly interrupted by a strange pocket of turbulence.