Kristen's parents just can't seem to do anything right. First they have their baby at the zoo, not in a hospital. Then they accidentally bring home an alligator baby! After it bites everyone on the nose, they return to the zoo and come back with a seal baby! Kristen sees that she will have to solve this problem herself. She bikes to the zoo and finds their baby with . . . a gorilla mommy. Kristen sees her chance - and takes back her baby brother!