From the warmth of her London home, Lyla tells her story: of finding a nightmarish relic along the stormy beach that sends her mind spiralling, of unravelling the mystery of a monster of nature, and of her hunt to discover the fates of those who've come before her - before time runs out. Through dreams of the horror that pursues her to abandoned apartments in Hong Kong, Lyla realises she's been marked in a way that could cost her everything.