年轻的古生物学家达里厄斯·鲍曼在加利福尼亚州的荒野中发现了活恐龙。
Some autobots are captured. The remaining Autobots team up with some rebels to free their friends, the rebels know all the weaknesses of their enemies machines. They merge with the Autobots to become Headmasters to free their friends.