Oh Mighty Watchdog, judgement day has arrived
Through the holy gate of the purgatory arrive lost souls of the mortal world.
Your mission as the the Mighty Watchdog is to send lost souls to their final destination by dragging them into the correct departure field. The color of a lost soul, proof of a soul purity, shall be the same as the departure field it is sent to. Good luck in your journey Oh Mighty Watchdog.