Where Is Mr. Grill？

" Where is Mr. Grill?" Jeb asked. " He said to meet here. "

" Maybe he forgot, " Poppy said. " I don't think so, " Dipper said.

Everyone looked around. But they didn't see the teacher.

" Hey! " Gasser said. " What's this?"

Eddy saw a sheet of paper. There was an oval on it.

" Hmm, " Eddy said. " It looks like a racetrack. "