The Incredible Shrinking Dexter

Dexter is crushed when the Shrinking Ray he invents doesn't work! He can't believe Science has failed him. But then the boy genius finds himself slowly growing smaller and smaller at school the next day. Even getting home from school is a struggle -- until he hitches a ride with Dee Dee. But -- uh-oh -- his big sister falls in love with the new "dolly" Dexter she's found! Will Dexter be able to escape his big sister's dollhouse and make it back to his lab alive?