Oribe Mutsumi and her friends were trapped on a supposedly desolate island after an airplane disaster during a school trip. Mutsumi tracked down the other survivors and assisted them with her wilderness skills. She believes they will be rescued in three days, which doesn't seem like a long time. She didn't factor for the fact that the island is teeming with massive deadly insects. Her knowledge of butterflies, wasps, and other insects may be the only thing that keeps any of her students alive long enough to be rescued!