Location: Borneo, IndonesiaThe Thornberrys are preparing for Donnie's ""birthday"" party in Borneo when one crisis after another happens. Grandma Sophie decides to visit the same day Nigel and Marianne must capture a wild orangutan on film or the foundation will cut their funding.

• Arlene Klasky
• Gábor Csupó

• Kevin Michael Richardson
• Pam Grier
• Frank Welker