Fifteen children, consisting of 8 boys and 7 girls, stumbled upon a grotto during their summer camp by the sea. As they explored its depths, they were astounded to come across functioning computers and electronic devices. Unexpectedly, they encountered the owner of the grotto - a man named Kokopelli, who disclosed that he was currently working as a programmer on a brand new game. According to him, the game involved a massive robot tasked with defending planet Earth against alien attacks. Kokopelli enlisted the children to test the game, urging them to sign a contract. All of the children except one eagerly agreed, and within moments, they were inexplicably transported back to the shoreline, convinced that it was all a dream.