"I'm leaving!" - Red Mage Yuku declared, and left the A-rank party "Thunderpike" after five years of membership. Unable to bear being underestimated, no, ridiculed, by the other members, he finally abandoned his position. While searching for a party, Yuku reunited with three former students, Marina, Silk, and Rain, and joined their party. Encouraged by the girls who looked up to him as "teachers," Yuku fully demonstrated his extraordinary magical power and skills, and by bringing out the best in Marina and the others, he completed one quest after another. And through the "adventure broadcast" by the magical broadcasting tool (artifact) "Camelat-kun," the party "Clover" became famous in the world. Clover's dream is to conquer the most difficult labyrinth, "Colorless Darkness." To make this dream come true, he challenges various labyrinths (dungeons), but gradually becomes embroiled in the chaos that shakes the world.