After spotting a miniature pterodactyl, Danny and his best friend Lin encounter a mysterious invention that shrinks them down to the size of a raisin.

"As the first official members of the International Microsaur Protection Agency, Danny and Lin thought that they were prepared for anything. They've flown with Tiny-Dactyls, herded Tiny-Stegos, and wrangled Tiny-saurus Rexes. But when the Professor's newly upgraded Expand-o-matic messes up, they end up facing their biggest problem yet... a full-sized Triceratops let loose in the middle of the town's yearly Tomato Festival! Will Danny and Lin be able...