Invader begins with Kairi trying to find Sora, so he can help her pack up the raft. Then cuts to a scene of Sora in the secret place, where he has a flashback of him an Kairi when they were younger. A man then appears, and says "This World has been connected...". When Sora turns to confront him he teases Sora, and when Kairi walks in, he disappears. Kairi scolds Sora for yet again being lazy, but he says he was back there getting mushrooms. They both leave to meet Riku down at the boats, so they can all go home.