The Seven Deadly Sins used to be a group of knights from the land of Britannia, who dissolved after allegedly conspiring against the Liones Kingdom. Despite their supposed defeat against the Holy Knights, rumors of their survival persisted. Ten years later, the Holy Knights organized a coup and kidnaped the King, therefore becoming the kingdom’s new tyrants. The third princess, Elizabeth, decided to set out to find the Seven Deadly Sins and ask for their help in reclaiming the kingdom from the tyrants.