In “Den City” where the latest network has developed, people were dueling day and night in the VR world called "LINK VRAINS" managed by SOL Technology Inc. The main character, Yusaku Fujiki is a quiet high school student with a great insight. He has been dueling, transforming himself into his avatar "Playmaker", to battle the "The Knights of Hanoi” that plots to destroy "LINK VRAINS".

[Source: Crunchyroll]