For the purposes of this debate, the story of JRR Tolkien's The Lord of the Rings is as follows:
In the land of Middle Earth, Frodo inherits the One Ring, a magic item forged by the dark lord Sauron, and must destroy it in Mount Doom. He is joined by a Fellowship including the ranger Aragorn (the rightful King of Gondor), an Elf, a Dwarf, and fellow hobbits. The Ring tempts all who encounter it with its power. A companion, Boromir, attempts to seize it but repents and dies nobly. Frodo shows mercy to Gollum, a creature corrupted by the Ring, despite his treachery. At Mount Doom, Frodo succumbs to the Ring's power and claims it, but Gollum attacks, seizes it, and falls into the fire, accidentally completing the quest. Aragorn is crowned king and rules with mercy. Frodo, permanently scarred by his ordeal, cannot readjust to ordinary life after his home, and he sails to the paradise of Valinor. The world's magic slowly fades, replaced by industry and eventually becoming the modern world.
For the purposes of this debate, The story of C.S Lewis's The Lion, the Witch, and The Wardrobe is as follows:
Four British siblings - Edmund, Peter, Lucy, and Susan - are evacuated during WWII and discover Narnia through a wardrobe, a magical land frozen in eternal winter by the evil White Witch. Edmund betrays his siblings to the Witch for promises of food and fame. When the great lion Aslan returns, the Witch claims Edmund's life under a "Deep Magic" demanding justice for treachery. Aslan sacrifices himself in Edmund's place, then resurrects, because a deeper magic reverses death when an innocent dies willingly for a traitor. Aslan defeats the Witch, Edmund is forgiven, and the four children are crowned rulers of Narnia before returning home.