In this flick-screen side view arcade adventure, for reasons unknown you have to enter and explore a castle to find a secret object. You start outside the castle with a banner and a dagger and you must get a key and enter through the front door. Once inside each screen is split into two floors with stairs connecting the various levels with doors to enter where the correct keys must be found. You can only carry two objects at a time with objects being picked up and dropped in the correct locations. There are various nasties moving about and obstacles to avoid as touching these loses one of three lives and you are sent back to the outside of the castle. Holding down the fire button and pressing down brings up a status screen showing objects carried, locations visited, score and how many lives. The joystick is used to control your hero.