Elementary school student Nanoka Koyanagi considers herself weird. She often uses it as an excuse to avoid doing things she dislikes, such as participating in her physical education class or getting along with her classmates. Out of concern and good will, her teacher assigns her to find the meaning of "happiness."

While Nanoka thinks about her homework, she often meets Abazure-san, a cheerful lady who helps her save a cat. Nanoka also pays regular visits to Obaa-chan, an old woman spending her twilight years in the woods. One day, Nanoka gets lost in the forest and stumbles across a high school girl named Minami committing self harm. As Nanoka gets closer to these three unique individuals, their stories and experiences shape for her a pathway toward soul-searching and self-discovery.