Kim Bong Seok, Jang Hee Soo and Lee Gang Hoon attend the same high school. They look like ordinary students, but they have special abilities that they inherited from their parents.Kim Bong Seok has the ability to fly, while Jang Hee Soo has excellent athletic abilities and is able to rapidly recover from injuries, like being shot or stabbed. Lee Gang Hoon has uncanny power and speed.These three students try to hide their special abilities from other people, while their parents struggle to protect them from being used by other people.(Source: AsianWiki)