The story follows a young genius university professor who is able to learn any language. He is asked to decipher a code used in wireless communication: the Luger Code, developed by werewolves, enemies to mankind. Startled to find that he cannot decipher the code and desperate to study it, the professor embarks on a journey to capture a living werewolf to aid him. (Source: LiveChart)

Logic is the concept that governs emotions, abilities, ideals, memories, and all other abstract properties that make up life in various worlds. With its power, however, alien Foreigners are able to pass through portals imbued with their respective world's Logic and pose a threat to other worlds. To counter this problem, the Another Logic Counter Agency (ALCA) from the human world of Septpia employs Logicalists, people with the power to form bonds with the Foreigners who seek peace and share their Logic, tasked with dealing with all possible dangers. After overloading his powers two years prior, Yoshichika Tsurugi has lost the ability to use Logic in combat, making him no different from a regular citizen. However, his life soon returns to the battlefield when he meets Athena, a Foreigner goddess from the world of Tetra-Heaven. She brings Yoshichika his missing Logic Card, allowing him to become a Logicalist once again. Soon after, Yoshichika forms a contract with Athena and joins ALCA. There, he meets other Logicalists, and only by working with them can he hope to bring an end to the threats once and for all.

Jack Hofner and Rowe Rikenbacker are Cloud 7's L/R. Their job is to protect the Royal family of Ishtar, their treasures, and their reputation. Jack & Rowe face one of the toughest missions of their career when they are assigned to protect Noelle, a candidate for the 15 Year Princesse contest. It starts out simple, but soon all of Cloud 7 are involved in a web of intrigue that includes bombings, corruption and murder. (Source: ANN)

Lupin & co. compete with a greedy bank president and her goons to solve the mystery leading to a broach, a treasure said to be behind the success of history's most powerful rulers. (Source: ANN)