The CH Postal Company has just received a request to transcribe a love letter from Irma Felice, a famous opera singer. Accepting the task, Violet Evergarden visits Irma to write her letter. However, not only does Irma provide little information, she asks Violet to write based on her own feelings. Despite Violet's numerous attempts, Irma finds every version of the letter inadequate. Violet consults her colleagues, and they help her out by writing love letters of their own. Yet even those are rejected by the opera singer. As a last resort, Violet asks Irma for her true thoughts and feelings, hoping to find the missing puzzle piece. Will the Auto Memory Doll be able to translate Irma's emotions into words?

The plot of Open Your Mind follows the extraterrestrial origin of life, coming from outerspace as six deities (Intermission act), evolving into water (Sho-ho) then emerging to the air (Hyakkin) and to the ground (Ku-nu). Each one of these creatures rules one of the six elements of the godai philosophy, i.e. Earth, Water, Fire, Wind (referred to as kaze in the Hyakkin chant), Sky and Consciousness (referred to as "Awakening" in the movie's title).

Several short animated mini-stories based on the short stories and four-panel manga of Keiko Fukuyama, including My Father the Mouse, The Rabbit Brothers, Summer Secret, The Mysterious Fairy, How Very Strange, and Kuro.

Gou has woved to find the legendary treasure of Salamander. Searching for it he meets Ren, a fairy, who is looking for the four treasures of Heart. Gou's childhood friend Mari is frustrated with Gou running after treasures, but befriends with another fairy Rin. Gou and Ren's treasure hunt messes with a secret project led by Mari's father. It turns out Salamander isn't what Gou thought it was in the first place...