Chrono is intent on getting to grade 3 before the big tournament, even though all of his points were recently taken from him. He finds a challenge with a jackpot payout that would take him back to grade 2 in one shot, but Chrono has no chance in the mysterious dark mansion if he goes it alone. And yet, he just quit his team...

Chrono, Shion, and Tokoha participate in the "survival Vanguard" event, Chrono`s last chance to get to grade 3 in time for regionals. But he and the others have plenty of rivals on the mountain, not to mention planned obstacles and the pitfalls of a natural environment!