Minami “Ikki” Itsuki, is a student and a delinquent. Also known as the “Unbeatable Babyface,” Ikki is the leader of the youth gang by the name of “East Side Gunz.” Upon his return home after being humiliated by a street gang of Storm Riders called the Skull Saders Ikki discovers a secret hidden from him by his benefactors, the Noyamano sisters. The sisters belong to a group of Storm Riders who go by the team name of Sleeping Forest. Keen on helping Ikki to regain his confidence and pride, they supply him with a pair of Air Trecks (abbreviated as “AT”). Ikki eventually settles his grudge with the Skull Saders, but in the process he receives more than the simple satisfaction of revenge. Determined to experience the sensation of “flight” for as long as he can, our headstrong protagonist is quickly sucked into the mysterious, yet irresistible world of Air Treck.
Eiichir? Maruo (nicknamed "Ei-chan" for his grades being straight "A") is an honor student, bookworm, and is not interested in anything other than studying. In order to solve his problem of lacking physical strength, he enrolled a tennis school and soon found the fascinating side of tennis. Being a tennis newbie lacking physical strength, he supplement his shortcomings with his excellent observing and analyzing skills.
Sh?y? Hinata began playing volleyball after seeing the "small giants" who played the sport when he was in elementary school. He suffers a crushing defeat in his first and last tournament in middle school at the hands of his rival Tobio Kageyama. So, Hinata joins Kurasuno High School's volleyball team, vowing revenge against Kageyama. However, Kageyama is also on Kurasuno's team. The former rivals form a legendary combo with Hinata's mobility and Kageyama's precision ball-handling. Together, they take on the local tournaments and vow to meet Kurasuno's fated rival school in the nationals.
Sakamichi Onada is a wimpy high school freshman who loves anime. He initially wants to enter the anime club, but winds up joining the cycling club after meeting two classmates who are already famous cyclists. He undertakes the grueling training to compete in races, and discovers his own hidden talent in cycling.