Legend has it that the energy crystal of Atlantis can save human lives. Therefore, to save his critically ill brother, Tobias and his friends set out for the underwater city of Atlantis. However, their journey is not smooth sailing, and they are even caught in a mysterious underwater vortex, losing consciousness. Upon arriving in Atlantis, they are informed that the energy source of the crystal, the lodestone, has been stolen.

传说中，亚特兰蒂斯的能量水晶能够挽救人类的性命，因此为了拯救病危的弟弟，托比亚与朋友来到了海底城市——亚特兰蒂斯。然而他们的航行并不顺利，最后甚至被卷进了神秘的海底漩涡，失去意识……来到亚特兰蒂斯后，他们却被告知水晶的能量根源——磁欧石已经失窃，托比亚等人不惜一切也要找回磁欧石。与此同时，同行的汉娜看起来神秘兮兮，托比亚不禁对她起了疑心，她究竟有何目的？他们要怎么面对亚特兰蒂斯人的不信任，以及步步逼近的危机，以找回磁欧石，全身而退呢？