Here's my attempt. (5/6)
Star Wars: Episode II - Attack of the Clones
Some years after the events of The Phantom Menace, the Republic is starting to collapse. A group of star systems named the Confederacy of Independent Systems or the Separatists, led by a former Jedi named Count Dooku has begun to withdraw from the Republic, sparking the threat of war.
Amidala, now her people's representative in the senate, fights against the creation of a unified Republic military, seeking to resolve the situation peacefully. However, an attempt is made on her life and so the Jedi assigns Obi-Wan Kenobi and his apprentice Anakin Skywalker to protect her. Anakin shows signs of having harboured feelings towards Amidala from their first encounter on Tatooine.
Another attempt is made to kill Amidala, but the Jedi prevent it. They track down the assassin but she is killed with a poison dart by Jango Fett. Anakin is assigned to take Amidala back to Naboo for her protection while Obi-Wan traces the assassin's killer. His sources point him towards a planet called Kamino but he finds that records of this planet have been purposefully deleted from the Jedi Archives, a supposed impossibility. With Yoda's help he manages to find the location of this planet.
While Anakin and Amidala grow closer on Naboo, Obi-Wan travels to Kamino. There he is shocked to find that he is expected. The Kaminoans are experts in cloning and had been preparing an army of clones of the assassin Jango Fett as soldiers for the Republic for many years on the orders of a Jedi named Sifo-Dyas. He meets Fett and his cloned 'son' Boba but the Fetts soon try to kill Obi-Wan before escaping. Obi-Wan, however, manages to place a tracking device on Fett's ship.
Anakin discovers through his connection to the Force that his mother has been kidnapped by Tatooine's dangerous native Tusken Raiders. Amidala goes with him to rescue her but when Anakin tracks them down and his mother dies before he can save her, he angrily slaughters all of them - men, women and children. Amidala is horrified by this but her new feelings for Anakin cause her to forgive him.
With Amidal absent, Chancellor Palpatine, in fact same man as Darth Sidious, convinced her assistant, Jar Jar Binks, to propose a motion to grant emergency war powers to the Chancellor. He immediately uses those powers to create a grand army of the Republic, using the Clones provided to him by the Kaminoans.
Obi-Wan follows Fett to Geonosis where he discovers Dooku, who has been revealed to be a Sith Lord and Darth Maul's replacement as Darth Sidious' apprentice, meeting with a number of different leaders from various factions, all pledging their allegiance to his new alliance of systems. He is captured but not before he is able to send a message that Anakin and Amidala receive and transmit to the Jedi Council.
They follow Obi-Wan to Geonosis but are also captured. Dooku plans to execute the three of them by making them fight many large animals in a gladiatorial arena but Amidala gets free. As the three start to win, Dooku orders in a contingent of battle droids to finish them off but a large group of Jedi, led by Mace Windu, arrives to even the odds.
Many Jedi are killed or injured before Windu kills Jango Fett. The Jedi find themselves surrounded by waves of battle droids but Yoda arrives with the clone army and rescues them. A huge battle ensues as Obi-Wan and Anakin track the escaping Dooku to a landing platform.
They attempt to engage Dooku, but he is too powerful for them, knocking out Obi-Wan and cutting off Anakin's arm. Yoda arrives and proves to be a much more formidable opponent, despite his size and apparent age, driving Dooku off.
Returning to Coruscant, open war has now broken out between the Republic and the Separatists, with both sides unknowingly being led by Palpatine. The Jedi have suffered heavy losses.
Anakin, his hand replaced with a mechanical one, marries Amidala in secret, with C-3PO and R2-D2 as their only witnesses.