If Aragorn can defeat the forces of evil and reclaim the kingship of Men, he will receive Arwen's hand in marriage (The Song of Hope (Duet)). Meanwhile, Gollum leads Sam and Frodo to the lair of an enormous spider named Shelob so he can take the Ring from Frodo when he is dead, but the hobbits manage to survive and make their way to Mount Doom. Galadriel casts spells to protect the forces of good in the final battle (Wonder, The Final Battle). Frodo and Sam finally reach the Cracks of Doom to destroy the Ring once and for all, but Frodo is consumed by the Ring's power and claims it for himself. Suddenly, Gollum reappears and takes the Ring from Frodo, but he loses his balance and falls into the fire with it. With the Ring's destruction, Sauron is defeated and the dominion of Men begins. Aragorn becomes King and marries Arwen (City of Kings), but Frodo, wearied by his quest, decides to leave Middle-earth forever and sail with Bilbo, Gandalf and the Great Elves to the lands of the West (Epilogue (Farewells)). After bidding farewell to their friend, Sam, Merry and Pippin return to the Shire (Finale).