This retro-styled comic takes place in the Butterfly World. There Qi and Yu are chased by the leaders of the Blue Butterfly Clan because they have broken the clan’s rules. Qi has practised a taboo spell to protect Yu and is condemned to death. As a result o this injustice, You becomes the “Cursed Butterfly”. Since the ancient curse “the Cursed Butterfly has the power to destroy the whole Butterfly world” is widely known among the Blue BUtterfly royal families, a warrant is issued to arrest You. The story unfolds around You’s complex vengeance as he develops into a legend.