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.

One year after their royal wedding, King Edvard and Queen Paige of Denmark receive an invitation to attend the wedding of Princess Myra of Sangyoon. Upon their arrival, Paige finds Myra is unhappy with her arranged marriage to the brooding and sinister Kah and is secretly in love with a young elephant handler named Alu.