The Hobbit

Bilbo Baggins, a comfortable and respectable hobbit, has his peaceful life disrupted by the arrival of Gandalf and thirteen dwarves, led by Thorin Oakenshield. They reveal a quest to reclaim their ancestral mountain home and treasure from the fearsome dragon Smaug. Initially terrified by the mission's danger, Bilbo's pride is provoked by the dwarves' mockery, and, spurred by his adventurous maternal ancestry, he ultimately agrees to serve as their professional burglar.

Bilbo reluctantly joins the dwarves and Gandalf on their journey into wild lands. Gandalf disappears, and Bilbo attempts to burgle three trolls, leading to the company's capture. Gandalf returns to save them by tricking the trolls into turning to stone. Later, the group is captured by goblins in the Misty Mountains, but Gandalf intervenes again, killing the Great Goblin and leading a chaotic escape during which Bilbo gets separated.

The weary travelers seek refuge in the hidden valley of Rivendell, the Last Homely House, welcomed by singing elves. Under the guidance of the wise Elrond, their health and gear are restored. Elrond identifies their troll-hoard weapons as ancient elvish blades and reveals hidden moon-letters on their map, showing the secret entrance to the Lonely Mountain can only be opened on Durin's Day.

Separated from the company, Bilbo awakens alone in a dark tunnel where he accidentally finds a small metal ring. He encounters Gollum, a slimy creature, who proposes a riddle-solving contest. Bilbo wins by asking what's in his pocket. Gollum discovers his "precious" magic ring is missing, and as he pursues Bilbo, the hobbit inadvertently puts on the ring, becoming invisible. He uses its power to escape Gollum and the goblins.

The company enters the dark, oppressive Mirkwood forest, instructed by Gandalf and Beorn to stay on the path. They face dwindling supplies, a magically enchanted river that puts Bombur into a deep sleep, and wasted arrows. Starving and desperate, they abandon the path, repeatedly drawn by mysterious lights. Bilbo, displaying new courage, battles and names his sword Sting after killing a giant spider. He then uses his magic ring to free the dwarves from giant spiders, but Thorin is captured by Wood-elves.

Bilbo uses his magic ring to follow the captured dwarves into the Elvenking's underground fortress. After weeks of stealth and planning, he discovers a water-gate for discarding empty barrels. Seizing an opportunity when the guards are drunk, Bilbo steals the keys, frees the dwarves, and packs each into a barrel. He then leaps onto the last barrel as they float down the river. After a cold journey, they reach Lake-town, bruised but safe, ready to continue their quest.

The company journeys to the Lonely Mountain, where their escort abandons them. They search the bleak, ruined lands for the secret door. Bilbo and some dwarves discover a hidden path leading to a smooth stone wall, but despair when they cannot open it. On the last evening of autumn, Bilbo remembers the map's riddle, noticing a thrush and the setting sun, realizing the exact moment to unlock the door with Thorin's key.

As the designated burglar, Bilbo enters Smaug's lair alone, stealing a gold cup from the dragon's vast hoard. This awakens the infuriated beast, who destroys their camp. Bilbo, using his ring, returns to engage Smaug in a battle of riddles, subtly flattering the dragon into revealing a vulnerable bare patch on its chest. After escaping a fiery attack, Bilbo reports his findings to the dwarves. Later, inside the mountain, Bilbo secretly finds and pockets the magnificent Arkenstone.

After Smaug's death, word reaches the mountain that Bard and the Elvenking are marching with their armies to claim a share of the treasure for rebuilding Lake-town. Thorin, consumed by greed and obsessed with the Arkenstone, refuses to negotiate, fortifying the gate and summoning his cousin Dáin's dwarven army. To prevent war, Bilbo secretly delivers the Arkenstone to Bard and the Elvenking. This betrayal enrages Thorin, but a sudden goblin and Warg invasion forces the dwarves, elves, and men to unite in the Battle of Five Armies. Bilbo is knocked unconscious during the fight.

Bilbo recovers to find the battle won by the arrival of the Eagles and Beorn. The mortally wounded Thorin reconciles with Bilbo before dying. Dáin is crowned King under the Mountain and distributes the treasure. Bilbo, declining vast riches, accepts only a small share and begins his journey home with Gandalf, passing through Beorn's peaceful lands and Rivendell. Upon returning to the Shire, he finds his belongings being auctioned, but ultimately settles back into Bag End, a changed hobbit who cherishes his adventures, keeps his ring secret, and writes his memoirs.