"Yumekuri" is a short-form anime series that revolves around the daily lives of four high school girls who share a common interest in dreams and the supernatural. The narrative is episodic, with each episode focusing on the girls' interactions and their attempts to interpret or influence their dreams. The main characters include Natsume, a cheerful and optimistic girl who often takes the lead in their dream-related activities; Saki, a more reserved and thoughtful character who provides a grounded perspective; Yuzu, who is imaginative and occasionally mischievous; and Aoi, who is pragmatic and often skeptical of the others' more fantastical ideas.

The series explores themes of friendship, curiosity, and the blending of reality with the dream world. The girls frequently engage in activities such as dream divination, where they attempt to predict future events or uncover hidden truths through their dreams. They also experiment with various methods to induce lucid dreaming, often leading to humorous or surreal outcomes. Despite the lighthearted tone, the series occasionally delves into more introspective moments, particularly when the characters reflect on their personal aspirations and fears.

The plot is driven by the girls' shared enthusiasm for exploring the boundaries between waking life and the dream world. Their adventures are often sparked by Natsume's boundless energy and curiosity, which sometimes leads the group into unexpected situations. Saki's calm demeanor helps balance the group dynamic, while Yuzu's creativity adds an element of unpredictability. Aoi's skepticism serves as a counterpoint, grounding the group's more outlandish ideas in reality.

Throughout the series, the characters' interactions highlight their individual personalities and the strength of their friendship. The narrative does not follow a continuous storyline but instead presents a series of vignettes that capture the essence of their daily lives and their shared fascination with dreams. The series maintains a consistent tone of whimsy and light-heartedness, with occasional moments of introspection that add depth to the characters and their relationships.