Once upon a time, the very first divers, people who knew how to penetrate into another world - “kopeck piece”, built an underground storage facility. Elei were imprisoned there - dangerous creatures who dream of enslaving our world. Centuries passed, and gradually everyone forgot about the hiding place. Everything except the ales themselves, who became its only masters. Once every five years, the gates of the vault are unlocked by a magic key that looks like a small silver snake. True, the owner of the artifact always dies in this case... Having found an unusual bracelet, Yara at first did not attach much importance to it: she simply took it, put it on and forgot. Until one day the girl realized that she had learned to read people's thoughts and control their actions. Refusing the new gift was not easy. And in exchange for it, a chain in the shape of a snake demanded her life from the girl.