The Scroll of Chaos by Elsie Chapman

When Astrid Xu stumbles upon an ancient scroll with Chinese characters, she justknowsit's the key to saving her mom from the "fog"the depression that keeps her mom bedridden for days at a time. What Astrid doesn't expect, though, is to be transportedalong with her younger sister, Marillato Zhen, a realm where the Chinese legends of old are real!

In Zhen, Astrid and Marilla meet Erlang Shen, a powerful warrior, and Lan Caihe, one of the Eight Immortals. It seems an ancient evil known as Chaos is wreaking havoc all throughout this mythological world, threatening to shroud all of Zhen in darknessand Astrid is the only one who can stop it.

With only her sister (who has been trapped in the body of a cat!) and two great mythological figures to help her, Astrid sets out on a journey to face her destiny. But will she be able to save her momand the world!before Chaos reigns supreme?(From Scholastic).

Elsie Chapman is a B.C. born writer currently based in Tokyo. She is also the author of the YA novels such as Dualed, All the Ways Home and Caster.