The non-aggression pact between the flourishing maritime city of Itha and the barren military state of Paro comes to an end when the latter's greedy monarch attempts to sabotage Itha and target its riches. Following this dreadful incident, the escalating animosity on each side disturbs the happiness of Itha's princess Ahnas and Paro's prince Jill, both of whom are deeply in love. The peaceful farmers from the village of Saki are worried as well. With their land separating Itha and Paro, they risk getting caught in the crossfire of an upcoming battle. Yet there is one among them that does not share such fear. Izu—an ambitious, energetic young man—sees this war as an opportunity to gain fame and wealth. Enticed by Paro's promise of a generous reward, he readily answers the kingdom's call for help, vowing to his beloved wife Marin that they will soon reunite. Feeling heartbroken, Marin becomes engrossed in prayer for her husband's safe return. Meanwhile, Ahnas and Jill are determined to not let their positions or their families' hostilities come between them. But will these young people's genuine love prevail over human foolishness and vices, or will it be sacrificed to petty ambitions?

For a year and a half, Youko Asagiri has fostered an unrequited love for one of her classmates. To express her affection, she composes a piano solo that she plans to show him when she confesses. When the moment of truth comes, however, Youko is not brave enough to speak to her classmate, and the ground suddenly swallows her up! In an instant, Youko finds herself in the mysterious realm of "Ashanti." She quickly makes friends with a talking dog named Lingam, who explains that Ashanti is a sister realm of "Noa," the realm that Youko came from. The two worlds were once connected, but they were separated long ago by the warrior Leda in order to protect the people of Noa. Now, Youko's arrival has temporarily opened a path between the realms, which the evil forces of Zell intend to make permanent. The forces of Zell steal Youko's cassette player under the belief that it is the mythical "Heart of Leda," a necessary artifact for their nefarious plans. However, Youko manages to evade their capture by transforming into Leda's warrior. With these new powers, will she be able to protect the people of Noa and return to her own world?