The demonic Yuujirou monitors his son's training with a growing anticipation. He targets the few men who are said to hold comparable power to Yuujirou, including the 'Unchained' bounty hunter Biscuit Olivia and a prehistoric human named Pickle revived from the Mesozoic era.
Publicly challenging his father to a revenge bout for the title of 'World's Strongest,' Baki sets out to train himself even further. After 18 years of fighting and pushing his body beyond its natural limits, Baki Hanma is almost ready to face his father Yuujirou in one final battle.