The movie begins in the Spirit World where th River Styx is floods due to rains. As the rain continues to fall, all of Spirit World is submerged with water. Koenma gives Botan an item to give to Yusuke before the water washes him away. As she flies through the storm, Botan is struck by lightning and sinks to the bottom, into the Living World and falls atop Yusuke's school terrace. Fortunately Yusuke was skipping class over there and he catches her.