The saga begins with a child Anakin Skywalker, the future Darth Vader, being discovered by Jedi Master Qui-Gon Jinn, who senses the boys' enormous potential. It is here that Skywalker first encounters the legendary Obi-Wan Kenobi, who himself is still but a pupil. As the first film unfolds, key characters appear, such as Padmé Amidala, R2-D2, C-3PO, Yoda, and the villainous Palpatine, who is a mere Senator in the Galactic Republic at the time. After a debate with the Jedi Council, one which includes the possible resurface of the Sith in addition to Skywalker, it is decided that Anakin will not be trained as a Jedi. At the end of the film, the Sith, Darth Maul, leads an attack against the Jedi on Naboo, and only the tragic death of Qui-Gon at his hands persuades the Jedi to reconcile their decision. Anakin Skywalker then becomes Obi-Wan's apprentice in the ways of the Force.
Over the course of the next two films, the Clone Wars begins; a raging war between the Galactic Republic and the Confederacy of Independent Systems. The film starts with the mysterious want for Padmé Amidala's life. While Obi-Wan Kenobi investigates the attacker, Anakin takes Padmé off Coruscant and heads to her home planet of Naboo. During the course of her protection, the two become entwined in a romantic relationship, furthering Anakin's future fall from the Jedi ways. Meanwhile, Obi-Wan discovers that, for years, Clones have been growing and training for use by the Republic. This discovery also brings Jango Fett and his son Boba out of hiding. The two escape to Geonosis, where Obi-Wan follows them and discovers the leaders of the Confederacy of Independent Systems, including fallen Jedi Master, Count Dooku.
Anakin, after his mother is brutally murdered by Tusken Raiders on Tatooine, feels the pull of the dark side growing stronger in himself and his surroundings. On Geonosis, Obi-Wan is captured, and the Jedi ask Anakin and Padmé to remain where they are. Padmé, however, decides to go, leaving Anakin forced to follow her. They are also captured after a brief scuffle, and the trio are nearly executed in the arena. Moments before this, many Jedi appear and begin attacking the native Geonosians and Battle Droids alike.
The newly appointed Supreme Chancellor Palpatine is given emergency powers to raise an army of clones (cloned from the notorious bounty hunter Jango Fett) to combat the rising Separatist threat. These clones are also dispatched to Geonosis to attack the Confederacy. While the major battle unfolds, describing what the Clone Wars will become, Count Dooku escapes, the clones become the grand army of the Republic, and Anakin and Padmé fall in love, a love that must be kept hidden from the Jedi, including Obi-Wan.
The film starts with a brutal attack on Coruscant. General Grievous leads the attack, while Count Dooku holds the Supreme Chancellor hostage. When Clone War Veterans Skywalker and Kenobi rescue him, Dooku is dead and the Droid General escapes. Palpatine has managed to gain almost unlimited power over the Galactic Senate and Anakin, who is pushed closer and closer to the dark side of the Force, has become dear friends with Palpatine, much to the chagrin of his fellow Jedi. Padmé is pregnant and stays at her apartment on Coruscant as Obi-Wan leaves for the Utapau system to search for Grievous. Leading an army of Clones, Kenobi finds and destroys the droid general.
The Jedi bring this news to Palpatine, who has just been discovered as the Sith Lord controlling the Senate. Master Mace Windu attempts to arrest the Supreme Chancellor, but is killed at the hands of Palpatine and Anakin Skywalker, who becomes Darth Vader with this act. Thinking the Jedi are behind the treachery, Anakin is ordered to begin the destruction of the Jedi Order (Order 66). After Order 66 is given, Obi-Wan learns of Anakin's and Padmé's marriage, but more crucially of Padmé's pregnancy. Padmé, afraid for Anakin, leaves for the lava world of Mustafar system, where Skywalker has just killed the remaining Separtist leaders, effectively ending the war. After sneaking onto Padmé's ship, Obi-Wan finds himself on Mustafar. The two engage in an epic duel, which results in Anakin, now Darth Vader, suffering loss of limbs, severe burns, and lung damage. Obi-Wan deserts his long time friend as dead, and takes the critically injured body of Padmé Amidala with him.
Following this, Vader is rescued by Palpatine and encased in a life support suit. The Skywalker twins, Luke and Leia, are separated after their birth, which ended Padmé's life. The remaining Jedi, Obi-Wan and Yoda, go in to exile, and Palpatine and Vader take hold of the Galactic Empire with a tight fist, seeing the dreaded construction of the first Death Star out their window; a glimpse of the horrors to come.