Friends Masha and Lena, at the request of a businessman they knew, went to Koh Samui to hand over the key to a safe deposit box to his friend, a Thai masseuse. They thought they could calmly take money from the bank, but found themselves in the middle of a hunt for an ancient Buddhist talisman - the largest emerald in the world. Instead of a relaxing holiday on the beach, the girls find themselves on the brink of death, because a powerful Thai drug lord, a local healer, Muay Thai fighters and a mysterious fatal beauty have entered the fight for possession of the treasure...