Ori and the Blind Forest

The voice of the Spirit Tree in the forest of Nibel narrates the story of when Ori, a guardian spirit, fell from it during a storm as a newborn and was adopted by a creature named Naru, who raised Ori as her own. A cataclysmic event soon makes the forest wither, and Naru dies of starvation. Newly orphaned, Ori is left to explore the forest on their own. After collapsing near the Spirit Tree and being revived by it, Ori later meets Sein, a small orb who guides Ori on a journey to restore the forest. Sein tasks Ori with recovering the light of three main elements supporting the balance of Nibel: Waters, Winds, and Warmth.
Ori and Sein come across two beings in their quest: Gumo, the last survivor of the spider-like Gumon clan, who were wiped out by the forest's cataclysm, and whose home supports the Wind element; and Kuro, a giant, shadowy owl who is hostile toward Ori. Gumo initially steals the key to the Water element, but he returns it after Ori saves him from a rockslide. After the Wind element is rekindled, Ori and Sein find Kuro's nest, empty except for a single egg, and they learn the source of her wrath and the forest's cataclysm: when Ori was lost, the Spirit Tree released a flash of light to look for it, which burned and killed all of Kuro's recently hatched offspring when she was away from her nest looking for food. Determined to prevent this from happening to her yet unborn child, Kuro took away the core on top of the Spirit Tree, which is actually Sein. Without its core, the Spirit Tree could not sustain the three elements, and Nibel lost its balance. Meanwhile, Gumo overhears Ori and Sein's intentions to restore Nibel and uses his clan treasure that stores the light from the Spirit Tree to revive Naru, taking her to where Ori is.
After the final element, Warmth, is restored in the volcano Mount Horu, Kuro attacks Ori and Sein as the fire from Horu spreads. Naru, who had been separated from Gumo, arrives to protect Ori from Kuro. Kuro softens, remembering the pain of losing her children. As the fire spreads and is about to reach her remaining egg, Kuro takes Sein back to the Spirit Tree, which emits a flash of bright light that dissipates the fire and restores the forest, but Kuro is destroyed by the light. Time passes as the forest begins to flourish once more, and Ori watches new spirits being born in the field at the foot of the Spirit Tree. Gumo and Naru watch together from afar, before the latter goes home, where Kuro's last egg now rests, just in time to see it begin to hatch.