After losing her mum, Skye feels very lonely and bullied at school. The only person who understands her is her sister Violet. They are inseparable and escape into their own world together playing imaginary games.

When foster child Roxanne joins their class Skye is happy to finally make a new friend. Desperate to fit in Skye goes along with Roxanne's scary dares. But she's worried when Roxanne finds out the truth about her sister she might not want to be friends anymore.