Welcome to the world of ThunderKid! Get ready to join in the adventures of five typical ten year old children. Denki Raiyama is a perky, fun loving boy who’s a little dense and loopy but has a huge soft spot for crying girls. His best friend Haruka Hanashiro is a bossy yet kind little girl who loves to try new things almost every day. Aki Hamura’s a pretty cool boy who’s a little jerky but a really softy at heart. The sweet and bubbly girly girl Natsumi Youkishi is everyone’s biggest fan and dear friend. And the shy Fuyuki Yukihashi is very timid but he is very brave when it really counts.
Little do these five kids know that a snake that randomly falls from the sky and an even more random thunderstorm will open up the secrets of a fantastic new aerial world called Atmos and a set of high-flying adventures too. Join the kids as they experience new adventures filled with fun, excitement, love, and discovery in both worlds!