Young daredevil Ernie, his sister Julia, and his best friend Max accidentally trip a time-machine into operation and find themselves transported back in time 65 million years, where they meet a T-rex named Tyra and her rambunctious son Dodger.

Rob Schneideras Dodger (voice)
Melanie Griffithas Tyra (voice)
William Baldwinas Sarco (voice)
Jane Lynchas Sue Fitzpatrick (voice)
Pamela Adlonas Ernie Fitzpatrick (voice)
Tara Strongas Julia Fitzpatrick (voice)
Stephen Baldwinas Surly (voice)
Yuri Lowenthalas Max Santiago (voice)
Grey DeLisleas Baby T-rex (voice)
Fred Tatascioreas Dr. Santiago (voice)