An animated film about the British engineer Isambard Kingdom Brunel, who spearheaded numerous engineering marvels of the early 19th century - including the Thames Tunnel, the Great Western Railway, and the Great Eastern steamship (for 40 years the world's largest steamship). Various styles of animation are used to depict events in his colorful life.

　　《无敌原始人》讲述了原本生活无忧无虑的 “石器时代”部落原始人，遭到了“青铜时 代”部落的攻击和放逐，无家可归的他们在 勇气十足的原始人道格的带领下团结一致， 为了夺回属于自己的家园，用足球赛的形式 向“青铜时代”部落宣战，一场石器时代与 青铜时代两个部落间的世纪对决即将上演……