Jing Yang, his classmate Angelina, and his cousin Tim team up to solve a mystery about hidden treasure in an underground bunker which was built during World War Two. A history dropout from a local university has been searching for the treasure for many years. The teenagers must find the treasure first before he does. They stumble into a secret tunnel beneath the bunker with help from two spirits haunting the bunker since World War Two. Just when they lay eyes on the gold bars hidden in the secret tunnel, who else but the history dropout should turn up behind them, startling them... Discounts available for schools. Contact the author at han.raymond at]hotmail.com.