And here he was, a little halfling from the Shire, a simple hobbit of the quiet countryside, expected to find a way where the great ones could not go, or dared not go. It was an evil fate.

— J.R.R. Tolkien, The Two Towers

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Frodo Baggins, son of Drogo Baggins and Primula Brandybuck, was a Hobbit of the Shire during the Third Age. He is one of  Tolkien's most famous character for his leading role in the Quest of the Ring, in which he bore the One Ring to Mount Doom, where it was destroyed.

Frodo was born on 22 September of S.R. 1368. After his parents died in a boating accident, Frodo went to live in Brandy Hall with his mother’s relatives, the Brandybucks.

Frodo stayed there until his uncle Bilbo Baggins adopted him and took him in to live at Bag End. Bilbo made Frodo his heir, frustrating the attempts of the disagreeable Sackville-Bagginses, who coveted the estate of Bag End.

Frodo and Bilbo were comfortable and well off until the time of Bilbo's 111th birthday, and Frodo's 33rd, the date of Frodo's coming of age. At this birthday party Bilbo gave his farewell speech, and made his long planned "disappearance" from the Shire. Frodo, who had been informed beforehand of it was spared the shock that afflicted the other assembled Hobbits. Frodo returned home as the new Master of Bag End. He was greeted there by Gandalf, who informed him that, among other things, Frodo had inherited Bilbo's ring.

Frodo took charge of distributing the presents Bilbo had left for the other hobbits, a long and tiring task.

Gandalf warned Frodo not to use the magic ring and to keep it secret and safe.

Frodo lived in peace and respectability for seventeen years, when Gandalf returned with the dreadful revelation that the ring was actually the One Ring of Sauron.

Furthermore, the Dark Lord was now aware of its survival, and would be searching for it. After a long discussion and a test by fire, the two agreed that Frodo would have to leave the Shire for his own safety with Samwise Gamgee. Gandalf recommended Rivendell as a destination, as the road was likely safe and the haven good. He told Frodo to take the alias Underhill abroad. Frodo was reluctant, but bought a house in Crickhollow as an excuse to head east.

Less than a day into their journeying, Frodo, strangely nervous, requested that the threesome hide upon the approach of a horseman. The rider was dressed in black, upon a black horse, making queer sniffing noises.

That night, they were again overtaken by a Black Horseman. This time it seemed to be able to sniff out their hiding place. But as it approached, it was driven away by the song of a group of Elves. Their leader, Gildor, greeted the hobbits warmly, and lauded Frodo for his knowledge of their tongue. Frodo tried to get information from Gildor on the Black Riders, but the elf would tell him very little.

He and his party left the Hobbits before daybreak, while they slept.

The next day the threesome agreed to stay off the road. After a brief scare when Sam sighted a Rider, they worried about losing their way.

When they reached the house in Crickhollow, the other hobbits reveal their knowledge of the One Ring, and promise to stick with him on the road to Rivendell. The next morning, leaving the house, they plunged into the Old Forest. In time they were driven by the trees down to the Withywindle and were they met Tom Bombadil.

* * * * It follows the "Quest of the Ring"(including the parts and settings: Bree, Rivendell, The Fellowship, Meeting Faramir in Ithilien and entering Mordor) of which I assume you know what exactly happend or if not that you want to read btw watch "The Lord of the Rings" and so you will know it soon. Thank you for understanding that I just shortened it here. * * * *

During the morning of March 25 Frodo and Sam reached the Crack of Doom where, at the last moment, Frodo, under the influence of the Ring, claimed it as his own. However, at that moment he was attacked by Gollum, who seized the Ring and then fell into the fire with it, thus destroying the Ring.

Frodo and Sam were saved out of Mordor by Gwaihir, Landroval and Meneldor, the great eagles, and taken to Ithilien. After being healed and having rested for a month, the Ring-bearers were honored on the Field of Cormallen. The following months the Hobbits witnessed the coronation of their companion Aragorn as King Elessar, and were present at his marriage to Arwen that summer.

Frodo and his company left Minas Tirith on July 19. The hobbits, with Gandalf and other Elves, reached Rivendell on September 21, where Frodo met Bilbo once again.

They stayed there until October 5 before reaching the Shire. At the Buckland Gate Gandalf left them to go and have a talk with Tom Bombadil. Once in the Shire, they reached Frogmorton where they were arrested. The next day they reached Bywater where they defeated the ruffians who had overtaken their land. The leader of the ruffians was revealed to be Saruman, and Frodo decided to let him live, even after he had tried to stab him with a knife. But Saruman did not live much longer, for his servant, Wormtongue, killed him himself, thus ending the War of the Ring.

Over the next two years, the travelers reordered the Shire and their lives. Frodo served as Mayor of Michel Delving until Will Whitfoot was restored.

On September 21 of T.A. 3021 Frodo set out for the Grey Havens. Going south to Woody End he met the Last Riding of the Keepers, Elrond, Galadriel, and Bilbo. On September 29 they came to the firth of Lhûn where Gandalf awaited them, and on the White Ship they crossed the Straight Road into the West. Frodo would spend the rest of his life in the bliss of Valinor.