Based on a game by Terios.

Zeus was an omniscient and omnipotent god who ruled in Heaven where the gods lived. However, he would be a pervert that had a wish to flirt with young angels, unbeknownst to his wife, Hera.

He created an idea to utilize the promotion examination which took place every 36 months. Three angels, Yuu, Miki, and Chadoko, came down to Earth to look at exams. Whenever they did start to work part-time jobs in the flower shop, the severe trials occurred one to another.

Zeus was caring for them secretly. However, it's wasn't from his kindness, but from his perverted desires. But, his activities helped within the lower world...