The second round of the Desire Grand Prix is a "Labyrinth Escape Game". Ace, who was transferred to a different space created by the Jyamato, has to pair up with ordinary people who got lost in the labyrinth and escape while protecting them.

Ace and the others find a door that seems to be an exit, but it won't open unless its code can be deciphered. Then the Jyamato appear, and Ace and the others try to transform into Riders and protect the people, but the Jyamato, who have achieved an amazing evolution, attacked the Riders!