Den City is the city where the newest network technology was developed. There, they developed the Link VRAINS, a cyberspace managed by the SOL Technologies Inc,. where people Duel night and day. Yuusaku Fujiki, is a cool student with excellent observation abilities. In order to defeat a group who plans to ruin the Link VRAINS, the Knights of Hanoi, he transforms into his avatar Playmaker and duels them. One day, Yuusaku gets the information that SOL Technology is desperately searching for Ignis, a mysterious life-form. With the help of Shouichi Kusanagi, a hacker who shares Yuusaku's goals, Yuusaku manages to capture Ignis and store it inside his duel disk. Noticing that the Knights of Hanoi are also after it, Yuusaku prepares a trap and plans his capture strategies.