Lily Lotus Dillweed and the town of Frogville have been under a curse for as long as they can remember. Every boy, on their 13th birthday, turns into a frog. The only way to be free from the curse is to kiss a person of royal blood.
The tradition is as unchanging as the town, until the day of Lily and her twin brother Crucus' 13th birthday. At the stroke of midnight, Lily turns into a frog instead of her brother and is forced to go on the traditional quest to be freed from her curse.