When I was sixteen, the same dream played out night after night: a girl's voice calling me into a limestone cave. One school holiday, I followed that call to Bewah Cave at Kenyir Lake in Terengganu. Inside, I discovered a crystal-clear pond. When I submerged, I time-travelled back 16,000 years. There, I met Biwa, a young cave-dweller living with her family and tribe. What followed was my struggle to belong-learning to survive among them, earning trust despite suspicion of my unusual abilities and appearance. My growing bond with Biwa stirred envy and jealousy in Fizo, a boy who fancied her.