Jinks is down in the basement working on a formula. Pixie and Dixie show up and heckle him for a little bit and then leave after Jinks causes an explosion. Jinks tries another formula and this one doesn't explode and he drinks it. He feels fine at first and then he shrinks to a size that's a little smaller than the mice.
Jinks goes to Pixie and Dixie's mouse hole and messes with them for a bit and then starts chasing them and has them cornered. Then the mice realize that Jinks is smaller than them and then they chase him. Jinks runs back to the lab and tries to work on a formula to return himself to normal when a dog jumps in and chases him. He takes shelter with Pixie and Dixie in their mouse hole.