Breaking Dawn Part 2: The Finale

Breaking Dawn part 2 is the finale to the Twilight saga. Bella survived, and is now a vampire. Her daughter, Renesme is born and is growing at an exponentially fast pace. Due to Bella giving birth, the Vultori see the child as a threat to all mankind and vampires. They believe Renesme is an immortal child because her parents are both vampires. However, Bella was human when she gave birth to Renesme. It was until after the birth, Bella became a vampire.
Edward and Bella gather vampires from all over the world to create an army that will fight against the Vultori. The group of vampires that joined their army have special abilities. A large amount of the abilities affect the mind. But there is one exception, Benjamin has the ability to control earth's four basic elements. It has been speculated that these gifts have been passed down genetically generation to generation.
Jacob imprinting on Renesme is also explained in this film. Imprinting is when a shape-shifter, or werewolf, is completely devoted to one person. Devotion can come in many forms. For example, being an older sibling or a protector to the imprinted. Imprinting creates a powerful bond between two people. It doesn't necessarily mean two people must have a romantic relationship. However, many spectators view imprinting as pedophilia, which can seem that way. Although, for Jacob and Renesme, imprinting is just a brother and sister relationship.
Towards the end, there is a throw down between the Cullens (and their army) and the Voluturi. In the fight scene, we see how vampires are killed. However, the entire fight scene turns out to be a vision from Alice. Alice, Edward's adopted sister, has the ability to see the future. Alice uses her ability to warn Aro, the leader of the Vultori, the deaths and disasters that will happen if they battle.
Although, Aro still worries that the child will cause destruction. It is until Renesme used her ability to show her side of the story, when Aro sees the child differently.