It's a new generation for Vanguard and at the head of the pack is Chrono Shindou, a misunderstood middle school student with a boring life until he finds a Vanguard deck in his cubbyhole one day. Chrono takes the deck to Card Capital 2, where part-time worker(!) and high school student Kamui shows him the ropes. But Kamui and the other customers are amazed because nobody has ever seen Chrono's clan before. Enter: Gear Chronicle!

Kamui introduces Chrono to the latest Vanguard tech, including a quest system that can improve a fighter's grade. Kamui accompanies Chrono on his first quest, to help a kid find his lost Vanguard card, but they have rivals, the annoying and tricky but strong Team Trinity Dragon!

Chrono picks a random quest to fight someone and goes to meet them at the Vanguard Colosseum, which employs the latest technology to make Vanguard fights more realistic than ever before. But Chrono's opponent turns out to be Kouji Ibuki, a cold-hearted pro who sees right through him.

When Chrono takes on a quest that has him trying to coax his way into an elderly woman's home, he's upstaged by fellow Vanguard fighter Shion Kiba. This leads to a match between them at Card Capital 2, but will Chrono be able to take Kamui's advice and "evolve" enough to beat this tough opponent?

Everyone is talking about the mysterious Gear Chronicle deck, possessed by only one person... who is currently suffering from a major toothache, but rather than going to the dentist, Chrono heads to Card Capital to fight a classmate, a beginner who's been coached by Tokoha, the girl destined to become Chrono's rival!

Chrono goes to the local Dragon Empire Branch for an event and registers for a chance to fight the Kagero clan leader, Mamoru Anjou... but he's sidetracked by Vangarou, the Vanguard Association's official mascot. Vangarou demands a fight with Chrono, currently the only known possessor of the mysterious Gear Chronicle deck, but the jolly-looking costumed character has a VIP inside!