疫病に襲われた村人を救うため、選ばれた“伝説の勇者”ヨシヒコは薬草を探す旅に出た。彼は旅の途中で剣士ダンジョー、彼を親の仇と思い込む女ムラサキ、インチキ魔法使いメレブという仲間を得る。やがてヨシヒコたち一行の前に仏が現れ、疫病は魔王ガリアスの仕業であると告げるが…。低予算を前面に押し出したドラゴン・クエスト風ファンタジー・コメディ。
The story is set in an ancient time, when the whole country was covered in thick forests. A mysterious plague breaks out, resulting in countless deaths. A pure young man named Yoshihiko becomes chosen as a hero, and he sets out on a journey in order to save a village. He has two goals – to bring back the legendary plant that can cure the plague, and to rescue his father Teruhiko who left to find the plant but never returned.