Only one Saint is born per generation. However, Hestia and Astrea, a pair of twin sisters, shattered this common belief. Yet, while Hestia can perform miracles, Astrea is looked down upon as useless. Forced to attend a marriage meeting in her arrogant sister’s place, Astrea unexpectedly encounters Silvert, the second prince of a neighboring kingdom—and through an unexpected turn of events, they become engaged!?