What if the asteroid that forever changed life on Earth missed the planet completely and giant dinosaurs never became extinct? In this epic journey into the world of dinosaurs, an Apatosaurus named Arlo makes an unlikely human friend. While traveling through a harsh and mysterious landscape, Arlo learns the power of confronting his fears and discovers what he is truly capable of.
如果百萬年前那顆徹底改變地球命運的小行星偏離了軌道，沒有撞擊地球，恐龍也沒有滅絕，那又會是怎樣的一番天地？在這段意義非凡的恐龍世界之旅中，你會看到一只叫阿樂的雷龍和一個看上去不太可能成為朋友的穴居人類小男孩結成了伙伴。他倆結伴同行，經歷了艱險又神秘的大自然的考驗，而阿樂不僅從中學到了如何面對自己的恐懼，而且還發現了自己真正的能力所在