Katora Kase is next in line to take over as guardian to a secret and powerful healing Elixir. Now she must journey into the wilds of Faway Forest to find the ingredient that gives the Elixir its potency. Even though she has her sister and brother, an old family friend, and the handsome son of a mapmaker as companions, she feels alone. It is her decision alone whether or not to bind herself to the Elixir to serve and protect it until it chooses a new guardian.

The forest hosts many dangers, including wicked beings that will stop at nothing to gain power, but the biggest danger Katora may face is whether or not to open up her heart to love.