Kamandi and his friends Prince Tuftan of the Tiger Kingdom and humanoid mutant Ben Boxer are kidnapped by a gorilla cult dedicated to finding the reincarnation of their god, The Mighty One.

The Avengers gather to celebrate their latest victory, but their celebration is quickly interrupted by the mysterious disappearance of Black Widow’s father, Red Guardian. As the Avengers investigate, they discover that Red Guardian isn’t the only one missing when they meet a dangerous new foe quite unlike anything they’ve ever encountered before.

故事发生在变形金刚的母星塞伯坦，聚焦变形金刚的青年时代，讲述汽车人领袖擎天柱（克里斯·海姆斯沃斯 Chris Hemsworth 配音）与霸天虎领袖威震天（布莱恩·泰里·亨利 Brian Tyree Henry 配音）从手足走向反目的故事，打响旷日持久的塞伯坦之战。