It's almost opening day at Yum Yum Fun Park - but something terrible has happened! Those mean and yucky Sourpusses have set out to spoil the big day. Come join the fun as those yummy-smelling Yums Yums meet scary sewer rats, trick a ferocious sewer gator and match wits with the Sourpusses. Will they be able to rescue their magic toolbox and complete repairs in time to make Yum Yum Fun Park... once again... the sweetest and most fantastic amusement park on earth?
| Actor | Role |
|---|---|
 Nancy CartwrightNot listed | Not listed |
| SSusan SiloNot listed | Not listed |
 Frank WelkerNot listed | Not listed |
 Charlie AdlerNot listed | Not listed |
 Stacey NelkinNot listed | Not listed |
 Noelle NorthNot listed | Not listed |
 B.J. WardNot listed | Not listed |