当工业间谍闯入卡尔戈林工业公司（Calgorin Industries）的顶级机密实验室时，他们意外放出了一只霸王龙。这头史前巨兽先在实验室内横冲直撞，大肆破坏，随后最终冲破封锁，逃到了洛杉矶街头。
Jeff Fahey
Dr. Harrison Parker
Tony Todd
James Radcliffe
Alexandra Ford
Rebecca Winters
Dee Wallace
Rhonda
Stephen Wastell
Eddie
Don Luce
Riley
Paula Ficara
Miss Revers
Gregory Gast
Harlon McVicker
Robert Axelrod
Wally
Bruce Barlow
Albert Brown
Adam Green
Maury
Miranda Kwok
Kate Lo
Elina Madison
Connie
Lenny Rose
Lionel Galgorin
