Tenma and Ochanomizu came along with A106 to work part-time at Maruhige Transport, a company headed by the detective Maruhige. After seeing A106, President Maruhige insists that he can't trust a robot with no heart to do his job. However, when an urgent moving request comes in from a major customer lady, Maruhige decides to put Tenma, Ochanomizu, and A106 to work. When Tenma and Ochanomizu arrive on the scene, they find Motoko waiting for them.