In a battle between pirates this birds entire pirate crew was captured and their souls put into glass bottles. He is the only one left to save them. In each level you will need to help him shoot the glass bottles that contain the souls of his comrades. This will free them from their tiny purgatories. This will not always be a simple feat. You will have to figure out how to shoot bottles that are placed rather unfortunately. For example, they might be surrounded by impenetrable barrels. Thankfully the bullets ricochet but this is not a trusted strategy. Good luck.