The Hero (named by the player) is a prisoner of the Dark Lord. One day, the Hero’s friend informs him of the Dark Lord’s goals, and he urges him to seek a Knight named Bogard. As the Hero escapes imprisonment, he learns that the Dark Lord is seeking a key to the Mana Sanctuary in order to control the Mana Tree, an energy source that sustains life. The Hero is befriended by the Heroine (named by the player) who is also seeking Bogard. The two find Bogard, who recommends that they seek out a man named Cibba. During their journey to meet Cibba, the Heroine is kidnapped. With the aid of a mysterious man, she is later rescued by the Hero. When they meet Cibba, he plays a message left by the Heroine’s mother, who reveals that she is a descendant of the guardians of the Mana Tree and that her pendant is the key to it. The mysterious man, upon discovering that the heroine holds the pendant, reveals himself to be Julius, the Dark Lord’s advisor, and kidnaps her. The Hero then attempts to rescue the Heroine, but he fails and is knocked off of Julius’s airship. However, the Heroine gives the Hero the pendant just before he falls.
The Hero is then reunited with Amanda, an escapee from his prison, who steals the pendant in order to win her brother Lester’s freedom. The mayor of Jadd, Davias, takes the pendant, but he transforms Lester into a parrot. The Hero and Amanda confront a Medusa for its tear, which will break the spell. They kill it, but Amanda is infected by the Medusa’s attack, causing her to transform into one herself. The Hero reluctantly kills her, and uses her tears to break Lester’s spell. Lester avenges Amanda’s death by killing Davias, who reveals that he gave the pendant to the Dark Lord. The Hero confronts and defeats the Dark Lord; however, Hero discovers that the Heroine is under Julius’ mind control and has opened the entrance to the Mana Tree. Julius reveals he is the last survivor of the Vandole empire, the empire who attempted to control the Mana Tree years ago, and handily defeats the Hero.
Realizing he is powerless to defeat Julius, the Hero learns from Cibba about a powerful sword called Excalibur. Cibba helps him find the Excalibur only to find a rusty Sword instead. He explains that the rusty sword is the Excalibur and would reveal its true strength to whoever it finds worthy. The Hero then raises Dime Tower to reach the Mana Sanctuary and meets a robot known as Marcie. After reaching the top, the tower begins to collapse and Marcie sacrifices himself by throwing the Hero across. After obtaining and passing the sword’s trials, the Hero confronts and defeats Julius at the cost of the Mana Tree’s life. The Heroine’s mother reveals she is the current Mana Tree and before dying, asks the Heroine to succeed her position. The Heroine agrees and bids farewell to the Hero as she becomes the next Mana Tree and the Hero her guardian.
Seiken Densetsu