In book 6 in the Gates of Heaven series, the ancient and acclaimed land of Ethryn is dying from a drought and while the king searches to find water, a mighty tower is uncovered in the desert. King Kael hopes the scroll found near the altar will tell of water sources, but when he touches the gemstone set in the altar, he falls into a coma that transports him 5,000 years back in time, where he is a slave building the tower.