During camping, we got trapped in a cave by a rockfall, but it looks like we might be saved thanks to the dynamite we had inserted in our butt. However, since the cave is narrow, we might get blown away too.

Together with my cute junior, I head to a nature-rich mountain for camping, away from the hustle and bustle of civilization. However, at the entrance of an old cave we found in the mountain, we're struck by falling rocks and the two of us become trapped inside the cave! It seems we could be saved if we use the dynamite I had hidden in my butt, but──!?