Nineteen-year-old dropout and perpetual under-achiever, Flick Wimple, has always lived in the shadow of her caring but neurotic elder sister, Alice. Since their parents died in a car crash, Alice has had to become 更多 of a mother to Flick – a responsibility that traps them both and heightens their love-hate relationship. Resigned to the way things are, Flick determines to expect nothing exceptional from life and give little in return.

She is forced to re-evaluate, however, when one 日 she steps through the wrong doorway and finds herself trapped in the 太空 between parallel worlds; the...