This book tells the story of a new discovery made by an archaeological robot. What is the origin of the mysterious shipwreck discovered by Flareflower and Petunia's underwater archaeological robot? Why did the Superman zombie gang mysteriously disappear in a flash of lightning? A green "knife" dropped from the shipwreck turns out to be the key to time travel. The long-extinct ancient creature, the plesiosaur, has reappeared in modern times. Can the heroes unravel the mysteries of history and uncover the truth?
本书讲述了：考古机器人有了新发现，耀斑花和佩妮豆的水下考古机器人勘探到的神秘沉船是什么来历呢，超人僵尸团伙为何会随闪电离奇消失。沉船上掉落的绿色的“刀”，竟然是时空穿梭的关键。早已灭绝的古生物蛇颈龙竟在现代重现，英雄们能拨开历史的重重迷雾，找到真相吗。
本书讲述了：考古机器人有了新发现，耀斑花和佩妮豆的水下考古机器人勘探到的神秘沉船是什么来历呢，超人僵尸团伙为何会随闪电离奇消失。沉船上掉落的绿色的“刀”，竟然是时空穿梭的关键。早已灭绝的古生物蛇颈龙竟在现代重现，英雄们能拨开历史的重重迷雾，找到真相吗。
