A mother has just fallen asleep after giving birth. She wakes up to find a fairy holding two identical babies. When the fairy realises she has been seen, she fleas leaving both the babies behind. The mum can't tell the difference between her baby and the changeling, so she decides to raise them both.

Cut to years later, you and your twin are really close. One of you is a fairy, but neither of you know if it's you or your sister.