Ultraman S01E18 - The Rainbow's Egg

Strange weather and a golden rainbow occur after a white bamboo flower blossoms. Some say when the flower comes together with the Rainbow's Egg, wishes will come true. Not far from a construction site, the monster Pagos emerges and attacks a truck carrying a spherical uranium capsule. Jun, Yuriko, and Ippei investigate the disaster and meet children chasing the rainbow to find the legendary egg.