二十世紀初期，主角是一位名為 Milo Thatcher 的年輕人，他由祖父留下的資料一直深信亞特蘭提斯城的存在，後來一支探險隊獲得一本古老手札後，邀他一同加入海底探險的旅程，尋找傳說中的神秘之城－亞特蘭提斯，他們搭乘著Rourke 船長所領導的潛水艇深入海底，經歷怪物攻擊等重重危機，最後終於來到亞特蘭提斯城，也結識了 Kida 公主和其他族民們，但是探險隊員間各自盤算卻在此時漸漸浮現，帝國的興衰、私心的利誘，演變成一觸即發的衝突。

In the series premiere, Baloo, an air cargo pilot, meets Kit Cloudkicker, a 12-year-old orphan, and takes him on as his navigator. He also loses his business to Rebecca Cunningham, a business major who becomes his boss. Meanwhile, Don Karnage, a notorious air pirate, uses a special gem stolen from Shere Khan's company, Khan Industries, to power a lightning gun and threaten Cape Suzette.

In a 1930s vision of the future and gumshoe chases down a robotic murder suspect.