Once again, the X-Venture Xplorers find themselves in the past- 430 millions years way back when, in the Silurian era! Somehow, Rain managed to snare Emily in one of his schemes to collect ancient treasure. However, they find far more than they bargained for when a group of prehistoric shellfish decide to snack them! Guess you have to expect that sort of thing while you"re PUTTERING IN THE PALAEOZOIC!

-

经过第二次启动时空物件转移机，众人被传送到4亿3千多万年前的志留纪！！

艾美丽抵不了小宇的激将法，负气地要跟他们一起执行搜集古生物的任务，因此被一群鹦鹉螺卷走！！X探险特工队在拯救艾美丽的同时，目睹了惊心动魄的鹦鹉螺群和巨型羽翅鲎之战！！