wandering gunslinger called the Sundown Kid meets with the bounty hunter Mad Dog in an isolated town for a gun duel. The pair end up working together to liberate the town from the Crazy Bunch bandit gang, led by O. Dio. After defeating O. Dio, revealed to be a horse possessed by the dead of the Battle of the Little Bighorn, the Sundown Kid leaves the town having rediscovered the value of protecting others, with his final encounters with Mad Dog varying depending on player choice. Present Day: The Strongest: Masaru Takahara wants to become the strongest person in the world, believing that defeating opponents in each fighting style would accomplish this goal. While Masaru succeeds, he is confronted by another fighter Odie O'Bright, who has been killing his opponents. Odie O'Bright challenges Masaru, who defeats him using his combined learned abilities. The Near Future: The Outsider: Psychic orphan Akira Tadokoro goes in pursuit of a biker gang called the Crusaders, seeking revenge for his father's death. Together with his friend Matsu, Akira pursues the Crusaders, learning that they are being used by the government to obtain sacrifices for an idol dubbed Odeo, which seeks to bring an enforced peace. Matsu−confessing that he killed Akira's father as the Crusaders' original leader−sacrifices himself trying to move the mech Steel Titan. With his powers, Akira uses the Steel Titan to destroy Odeo. The Distant Future: The Mechanical Heart: The cargo ship Cogito Ergo Sum is carrying a monster to Earth. Maintenance robot Cube ends up investigating the incident when the monster escapes and begins killing the crew, which, combined with fatal accidents, causes the survivors to turn on one another. The ultimate culprit is the ship's computer, OD-10, who wants to curtail the crew's recurring antisocial behavior. Cube hacks and deactivates OD-10. The Middle Ages: The Lord of Dark: After the knight Oersted defeats his friend Streibough in a contest for the hand of Princess Alethea of Lucrece, Alethea is kidnapped by subordinates of the Lord of Dark, having apparently returned. Oersted leads a party that includes Streibough to rescue Alethea. They defeat the Lord of Dark, revealed to be a lesser monster in disguise, but Streibough is apparently killed and Alethea remains missing. Back at the castle, Oersted is tricked by a magical illusion into killing Lucrece's king, causing its people to turn on him. Escaping, Oersted discovers that a jealous