Married couple John and Jen, their sons Cassy and Crystal have recently moved into a new home. One day, Crystal inexplicably falls into a coma.
After three months of treatment without result, John and Jen take Crystal back to home. After staying for years in the house, Crystal - a 10 years old young girl when she first visited magical Underland, Crytal is now a teenager with no memory of the place - except in her dreams. The mushroom is "magic" only in the context of the story.
Her life takes a turn for the unexpected scenes when, at a beautiful garden party for her fiance and herself, she spots a certain white flying feather and jump into a dark dottomless hole.
Crytal follows the White flying feather fall down to the Underland, where she has a series of marvelously imaginative adventures begins.
The King gather their armies on a chessboard-like battlefield and send Crystal and the witch to decide the battle in single combat. Alice fights the witch, as the two armies battle. Alice finally defeats the witch by beheading it. In the end, at Crystal victory, the red knights turn against their rules. As punishment for their crimes, the King banishes her sister.