A lucky elf girl has found a useful artifact – a stone that vibrated when orcs were nearby. But putting it in her pocket she risked not noticing the vibration through the clothes, and always carrying it in her hand wasn’t handy either. So she had no choice but to shove it into her pussy. The closer the orcs were the stronger the stone vibrated. In the end the elf couldn’t resist the pleasure and let herself be captured. The orc warlord raped her and it revealed another function of the magical stone. If an orc touched it, the stone exploded.