Man sets up a chair in front of a huge tsunami

In December 2004, close-knit family Maria, Henry and their three sons begin their winter vacation in Thailand. But the day after Christmas, the idyllic holiday turns into an incomprehensible nightmare when a terrifying roar rises from the depths of the sea, followed by a wall of black water that devours everything in its path. Though Maria and her family face their darkest hour, unexpected displays of kindness and courage ameliorate their terror.

Using every known means of transportation, several savants from the Geographic Society undertake a journey through the Alps to the Sun which finishes under the sea.