Stoneage Assassin is a dark tale of revenge that takes place in a prehistoric age. As the player you take the role of the father who had his daughter kidnapped in the middle of the night by hunters. After being left for dead by the hunters the father is full of grief and obsessed with revenge. Years later he then receives a mysterious message on his cave wall in the forms of drawings. Once deciphered it appears that someone wishes to help him and has left him a makeshift sniper rifle to aid him in his quest for revenge. As the player you must complete a series of missions that will each get you closer to the one responsible for kidnapping your daughter and may still know her whereabouts.