I was reborn as a captive domestic cow, awakening the devouring evolution system. Farm owner Lao Wang wanted to slaughter and sell me. In crisis, I escaped into the deep mountains, devoured wild beasts to continuously mutate, repelled the hunter merchant Lao Dao, resisted the capture team of the research institute, evolved all the way into the abyss demon bull, shattered all cages, and reached the peak of the mountains to become the one and only beast king of the entire wilderness.