Dragon Quest: Echoes of an Elusive Age (Nintendo Cinematic Universe)

Dragon Quest: Echoes of an Elusive Age is a Japanese anime film.

Summary
The Luminary attempts to stop an apocalypse that he allegedly supposed to cause.

Plot Elements

 * The game is set in the world of Erdrea and begins as the kingdom of Dundrasil is invaded and destroyed by an army of monsters. During the attack, an infant survives and is found floating down a river by an old man named Chalky in the village of Cobblestone.
 * The infant is adopted by Chalky's daughter Amber and raised in the village.
 * After the man's coming-of-age ceremony, Amber reveals the truth to him about his birth and adoption and sends him to meet King Carnelian of Heliodor. However, the king accuses him of being an evil entity and throws him into the dungeons.
 * Imprisoned, the man meets a thief named Erik who reveals that he was sent to meet him, as the mark on his hand is proof that he is the Luminary, a legendary hero chosen by the world tree Yggdrasil to save Erdrea from evil.
 * The pair escape and evade capture, later joined by two mages: Veronica, who is trapped in a child's body due to a curse, and her twin sister, Serena. On their quest to help the Luminary reach Yggdrasil, they gain three other companions: Sylvando, a traveling entertainer, Jade, the exiled princess of Heliodor who helped the infant Luminary escape during the attack of Dundrasil, and Rab, the former king of Dundrasil and the Luminary's grandfather.
 * The party eventually arrives at the heart of Yggdrasil, which contains the Sword of Light, the Luminary's destined weapon. However, just as the Luminary is about to take it, he and the party are intercepted by Carnelian and his retainers Jasper and Hendrik.
 * It is revealed that Carnelian was possessed by an evil sorcerer known as Mordegon, also was responsible for Dundrasil's destruction, and Jasper is Mordegon's agent. The two subdue Hendrik and the Luminary's party, with Mordegon taking the Sword of Light, corrupting it into the Sword of Shadows, and absorbing the heart of Yggdrasil, destroying the tree and plunging the world into an age of darkness.
 * Separated from the others, the Luminary returns to Cobblestone, turned into a fortified refuge for Heliodor citizens led by Carnelian and Hendrik, who apologize to the Luminary for all the troubles they caused him.
 * Hendrik joins forces with the Luminary, and together they reclaim Heliodor from Mordegon's forces. At one point, a dark spirit summons a mysterious orb called Erdwin's Lantern, however Mordegon destroys it so no one stands in his way.
 * After reuniting with the rest of the party, except for Veronica, who perished saving the others during the fall of Yggdrasil, the Luminary obtains the means to forge a new Sword of Light, which they use to defeat Jasper and Mordegon, restoring Yggdrasil and the world.
 * Afterwards, the party discovers the means to bring Veronica (and other people who perished) back within the Tower of Lost Time. There, they meet the Timekeeper, who gives the Luminary the power to go back in time and defeat Mordegon before he can steal the Sword of Light and Yggdrasil's heart, thus saving Veronica from sacrificing herself and preventing Mordegon's dark age. However, due to Mordegon's absence, Erdwin's Lantern wasn't destroyed, thus the dark spirit is able to merge with it and awaken as the Dark One, Calasmos.
 * The party learns that a prior Luminary named Erdwin was betrayed and killed by his mage companion Morcant, who absorbed Calasmos' powers and transformed into Mordegon. Since he could not be destroyed forever without the power of the Luminary, Serenica, Erdwin's former sage companion and lover, then sealed the weakened Calasmos within Erdwin's Lantern and attempted to return to the past at the Tower of Lost Time, but was turned into the Timekeeper instead.
 * The party then confronts and destroys Calasmos, before the Luminary entrusts his mark to Serenica, who reverts to her original form and uses it to return to the past and reunite with Erdwin. Accompanied by Veronica and Serena, he also returns the Sword of Light to Yggdrasil, who reveals itself to be Yggdragon, an ancient dragon of light who was defeated by Calasmos ages ago, whose body transformed into the tree Yggdrasil and gave life to Erdrea.
 * Yggdragon bestows upon the Luminary the title of "Erdrick", the mightiest of all heroes, and keeps the Sword for the day when a new hero will need it to defend Erdrea from evil.
 * Mid Credits Scene: The party begins to head when they (minus the Luminary) suddenly disintegrate into golden dust particles.
 * Post-Credits Scene: Serenica reunites with Erdwin in the past, while after the credits, a young mother, after reading the Luminary's story in a book, wakes up her child from bed.