Deep in the countryside, a man named Okina works as a bamboo cutter in a forest, chopping away at the hollow plants day after day. One day, he discovers a small baby inside a glowing shoot. He immediately takes her home, convinced that she is a princess sent to Earth as a divine blessing from heaven. Okina and his wife Ouna take it upon themselves to raise the infant as their own, watching over her as she quickly grows into an energetic young girl. Given the name Kaguya, she fits right in with the village she has come to call home, going on adventures with the other children and enjoying what youth has to offer.

But when Okina finds a large fortune of gold and treasure in the forest, Kaguya's life is completely changed. Believing this to be yet another gift from heaven, he takes it upon himself to turn his daughter into a real princess using the wealth he has just obtained, relocating the family to a mansion in the capital. As she leaves her friends behind to enter into an unwanted life of royalty, Kaguya's origins and purpose slowly come to light.

Modest Heroes will consist of three shorts by three different directors: "Kanini & Kanino" ("Kanini to Kanino") by Hiromasa Yonebayashi will be a 15-minute fantasy adventure story of two crab siblings, and will be long. "Life Ain't Gonna Lose" ("Samurai Egg") by Yoshiyuki Momose will be a 15-minute "human drama" showing the love between a mother and a boy. "Invisible" ("Tōmei Ningen") by Akihiko Yamashita will be a 14-minute "action spectacle" that centers on the lonely struggle of one invisible man. Studio Ponoc describes the shorts as "tales of modest heroes of our times."

(Source: ANN, edited)

A story set in the dream world, depicting the Kasukabe Defense Forces and the Nohara Family fighting against a nightmare trouble. One day the people in Kasukabe come to be able to have dreams they want in their sleep, after having a strange dream in which a giant fish swallows them. The people enjoy having their own distinctive dream in the dream world, but the world gradually changes into a nightmare world. Shinnosuke Nohara and Kasukabe Defense Forces members let Saki Nubatama, a girl who moves in Kasukabe, join the group, and they go into the dream world to explore the cause of the nightmare.

(Source: Manabu Tsuribe)

Kai, a young middle schooler, lives in Hinashi Town, a lonely fishing village, with his father and his grandfather, a sun-umbrella maker. He used to live in Tokyo, but after his parents divorced he moved back to his parent's home town. Kai has trouble telling his parents the complicated feelings he has for them, and he's lonely and pessimistic about his school life. One of his joys is uploading songs he writes to the internet.

One day, his classmates Kunio and Yuuho invite him to join their band, "SEIRÈN." As he reluctantly follows them to Merfolk Island, their practice spot, they meet Lu, the mermaid girl. Lu sings merrily and dances innocently. As Kai begins to spend time with her, he starts to be able to say what it is that he's really thinking.

But since ancient times, the people of Hinashi Town have thought that mermaids brought disaster. Something happens that puts a huge rift between Lu and the townspeople. And then, the town is in danger. Will Kai's cry for the heart be able to save the town?

(Source: Fuji Creative Corporation)