Hoping to bring back Jin's lost memories, Kaito and his friends set out for England on a journey to see puzzles. In the maze under the church where a young Kaito and Rook first met Jin, a mysterious girl appears. Jin seems to know her and calls her Raetsel, but she vanishes and takes him with her. Then the maze's traps spring to life and turn on Kaito and the others. Hanging over the season is a pointed question: does the world really need puzzles at all?