Watch Out for the Mecha Cop!. To avoid being captured by the police, bank robbers raid a local pre-school and take hostages. As the police are try to handle the situation, a business man arrives and sends in a highly advanced android Mecha Cop who quickly subdues the criminals using non-lethal force. Over the next few days, the Mecha Cops show their many other skills and begin serving as policemen. However, Nanvel and the rest of Team Warrior are suspicions because the Mecha Cops seem to be too advanced to be real. Nanvel discovers they are each controlled by a black diamond, made from a thousand compressed diamonds. Maki links this discovery to a case that her fiancee Masato was working on when he was killed. Unexpectedly the Mecha Cops begin to malfunction, but Team Warrior is able to defeat them and claim a large reward.