S1·E21 Break Through the Smoke!

Strange things are happening around a dead volcano including reports of dead birds and a giant smoking bellowing monster. The Science Patrol is asked to investigate. Seeing no danger, Mura sends Fuji to investigate the monster sighting.

Hoshino stows away in the airplane and confirms the sighting. Both Mura and Hoshino are trapped by the monster Kemurah who starts a rampage in a nearby city.