Yūri Katsuki carried all of Japan's hopes on his shoulders to win at the Gran Prix Finale ice skating competition, but suffered a crushing defeat. He returns home to Kyushu and half feels like he wants to retire, and half feels like he wants to continue ice skating. Suddenly the five-time consecutive world championship ice skater Victor Nikiforov appears before him with Yuri Plisetsky, a young Russian figure skater who is already defeating his seniors. Victor and both Yuris take up the challenge on an unprecedented Gran Prix series.

Kamijo is a student in Academy City, where people use science to develop supernatural abilities. The guy’s got a lot of heart – luckily for a young nun named Index. She’s on the run from a sorcery society that covets the astonishing 103,000 volumes of magical knowledge stored in her memory. When Index stumbles into Kamijo’s life, she find a faithful friend and protector, and while Kamijo’s easily the weakest kid in Academy City, he’s got something else going for him: the Imagine Breaker, an unexplainable power stored in his right hand that negates the powers of others. With scientists and sorcerers attacking from all sides, the Imagine Breaker will definitely come in handy – but it’s Kamijo’s loyalty to Index that will be his greatest weapon in the fight to keep her safe.