Jake Chambers (Tom Taylor) is a young 11-year-old adventure seeker who discovers clues about another dimension called Mid-World. Upon following the mystery, he is spirited away to Mid-World where he encounters the lone frontiersman knight Roland Deschain (Idris Elba) who is on a quest to reach the “Dark Tower” that resides in End-World and reach the nexus point between time and space that he hopes will save Mid-World from extinction. But with various monsters and a vicious sorcerer named Walter Padick (Matthew McConaughey) hot on their trail, the unlikely duo find that their quest may be difficult to complete.