I don't remember what it's called. It's about a young girl that moves in to her aunts (I least I think it her aunt) house because her parents were killed while on a cruise ship. She then finds a key that opens a gate to a garden. She finds the garden overgrown with plants. She meets a boy and they learn that the aunt had something to do with the garden. The kids start growing plants and trees in the garden again. One of the 3 is in a wheelchair I think.
Hopefully this is enough detail.
Hopefully this is enough detail.