Hideki, leader of the Nerima Daikon Brothers, has a dream to build a dome in his hometown of Nerima to hold a concert for his band. Together with his cousin, Mako (whom he has a crush on), Ichiro, and Pandaikon (a panda he found in his yard that resembles a daikon), they strive to make money any way they can, and in the process, rid the world of evil-doers and steal their money in the process. With help from a rental guy, Nabeshin, who rents them outrageous items that always seem to help them defeat the bad guys, the Nerima Daikon Brothers sing their way to victory but always manage to lose the money they stole in the end. Even under the investigation of Inspector Karakuri, they never fail to fight for justice the Nerima-Daikon way.
Louie is a mage student of the mage academy, and adoptive son of the director. But still, he sucks at magic. Instead, he has abilities for drinking, flirting and fighting in taverns. One day, he meets a party of girls (a priestess, a warrior and a thief) looking for a mage to join them to open a ruin entrance, but they absolutely rejects him due to his pathetic magic skills. But he refuses to be rejected, and then he tries to join them by force, only to interrupting a sacred ritual of Melissa (the priestess), revealing Louie as her master. Now, as the will of god Miley says, they have no choice but to accept them, and here begins the whole new adventure for this "mage" Louie, a brawny student at the mage's guild, is reluctantly accepted by three girls (Merrill-thief, Genie-fighter, and Melissa-priestess) as a companion for their adventuring party. As the foursome explore ruins, battle dark creatures, and make new friends, they also uncover a sinister plot within the kingdom.