Frodo Baggins and the other members of the Fellowship continue on their sacred quest to destroy the One Ring--but on separate paths. Their destinies lie at two towers--Orthanc Tower in Isengard, where the corrupt wizard Saruman awaits, and Sauron's fortress at Barad-dur, deep within the dark lands of Mordor. Frodo and Sam are trekking to Mordor to destroy the One Ring of Power while Gimli, Legolas and Aragorn search for the orc-captured Merry and Pippin. All along, nefarious wizard Saruman awaits the Fellowship members at the Orthanc Tower in Isengard.

Trapped near the summit of K2, the world's second-highest mountain, Annie Garrett radios to base camp for help. Brother Peter hears Annie's message and assembles a team to save her and her group before they succumb to K2's unforgiving elements. But, as Annie lays injured in an icy cavern, the rescuers face several terrifying events that could end the rescue attempt -- and their lives.