This is a wonderland called "BINARY LAND" where there are mazes on both the right and left sides.
You play as Grin-kun or Maron-chan, start from START and get them both to the goal at the same time within the time limit.
The two go in opposite directions.
To avoid getting caught in the "spider webs" in the maze, use "Runrun Gas" to melt them. Even if Maron-chan gets caught in a "spider web", Grin-kun can pass the goal and apply "Runrun gas" to save him. The same is true vice versa.