A field trip takes the class away from the city for some summer fun, but when trouble occurs so far from home, there's no easy way to get to Junk.

A few unexpected encounters leave Yuta and the others in shock. Except, Gridman being hunted down means Yuta is ever in danger.

The others are finding Yuta's story hard to believe. Nobody wants to confront and ask Akane, but in the meantime, Anti has made plans of his own.

When the Tsutsujidai High School Festival is threatened, the Gridman Alliance must decide how to proceed. Some of them wonder if fighting is the only choice they have.

Akane tries to win over the Gridman Alliance by lulling them into a dream. Will they remember each other and Gridman's calling or forever have sweet dreams?