Fire Emblem Awakening (Nintendo Cinematic Universe)

Fire Emblem Awakening is a Japanese anime film.

Summary
Chrom and his Kingdom of Ylisse aid an amnesiac tactician named Robin to defend the Kingdom against the undead Risen.

Plot Elements

 * After dreaming of killing Chrom, an amnesiac Robin wakes up in a field and is found by Chrom and members of his personal army, the Shepherds.
 * Robin joins the Shepherds, after exhibiting the qualities of a tactician when they defend a nearby town from Plegian bandits.
 * After gaining an alliance with Regna Ferox, the Shepherds move to fight both Plegia's forces and revenant monsters called the Risen; they are helped by a masked man calling himself "Marth".
 * After a confrontation between Plegia and the Shepherds, Emmeryn is almost killed by Validar and his minions.
 * The assassination plot is foiled with aid from "Marth", who has prior knowledge of the event, and is also revealed to be a woman.
 * Soon after, Plegian forces capture Emmeryn as she goes to parley with King Gangrel, Plegia's ruler, and prevent another war.
 * Gangrel demands the Fire Emblem in exchange for Emmeryn's life.
 * Though Chrom almost accepts Gangrel's terms, Emmeryn stops him by throwing herself over a cliff, becoming a martyr to both Ylisse and Plegia.
 * Eventually, the Shepherds triumph over Plegia, defeating Gangrel and restoring peace to the continent.
 * Two years after Gangrel's defeat, Chrom inherits the throne of Ylisse, marries, and fathers a newborn daughter named Lucina.
 * Chrom leads the Shepherds again when Emperor Walhart of Valm threatens to invade Ylisse.
 * During the campaign, "Marth" returns, and reveals that she is a Lucina from an alternate timeline from more than 10 years in the future where Grima has been resurrected, and used a time traveling spell devised by Naga to return to the past in order to prevent the events leading to her future.
 * To combat Grima, Chrom must perform the "Awakening", a ritual that grants him Naga's power, by combining the Fire Emblem with five magical gems divided among the nations.
 * During and after the war in Valm, the Shepherds manage to retrieve four of the gemstones.
 * They are then ambushed by Validar, the new king of Plegia and Robin's father, after he offers them the last gemstone.
 * Validar takes control of Robin and steals the Fire Emblem from Chrom. He also reveals that Robin was born as the ideal vessel for Grima.
 * Lucina realizes that Grima used Robin to kill Chrom in her timeline, and attempts to execute them, but stands down.
 * The Shepherds manage to track down Validar, who uses Robin to attack Chrom, mirroring the events of their nightmare.; however, Robin uses their foreknowledge to prevent Chrom's death, allowing the Shepherds to kill Validar and recover the Fire Emblem.
 * At this point, the possessed Robin from Lucina's future appears, revealing that the present timeline Robin's amnesia was caused by Grima's unsuccessful attempt to possess them.
 * The future Robin then uses the power gathered for Grima's resurrection to restore its dragon form.
 * In a race against time, Chrom performs the Awakening and summons Naga.
 * Although Chrom now has the power to stop Grima, Naga reveals that she only has enough power to put Grima to sleep for another thousand years.
 * Naga explains that the only way to truly destroy Grima is to have him destroy himself through Robin, which could come at cost of Robin's life.
 * Naga tells them that Robin will only survive if their bonds with Chrom and the Shepherds are strong enough.
 * In the final battle, the Shepherds manage to weaken Grima. Chrom, already set against the sacrifice of Robin, offers to deliver the final blow to the fell dragon.
 * One of two outcomes will happens depending on Robin's choice.
 * If Chrom deals the final blow, Grima is put back to sleep for another thousand years, though the Avatar is left with regrets.
 * If Robin deals the final blow, they kill Grima, causing both to vanish. Chrom and the Shepherds refuse to believe that Robin is dead, and vow to find them and bring them home.
 * Post-Credits Scene: Robin wakes up in a field similar to the beginning of the movie, where Chrom and Lissa find them and welcome them home.