"Dorami-chan: Hello, Dynosis Kids!!" is a short anime special featuring Dorami, the younger sister of Doraemon, as the central character. The story revolves around Dorami and her friends as they encounter a group of alien children known as the Dynosis Kids. These extraterrestrial visitors arrive on Earth with the intention of studying human behavior and culture. However, their mission takes an unexpected turn when they accidentally lose their spaceship, leaving them stranded.

Dorami, along with her friends, takes it upon herself to assist the Dynosis Kids in locating their lost spaceship. The narrative unfolds as the group embarks on a series of lighthearted and adventurous misadventures, navigating various challenges and learning about teamwork and friendship along the way. The Dynosis Kids, despite their advanced technology, often find themselves out of their depth in human environments, leading to humorous situations.

The main characters include Dorami, who is portrayed as kind-hearted and resourceful, and the Dynosis Kids, each with distinct personalities and quirks that add to the dynamic of the group. The interactions between Dorami and the Dynosis Kids highlight themes of cooperation and understanding, as they work together to overcome obstacles and achieve their goal.

The plot is straightforward and episodic, focusing on the group's efforts to retrieve the spaceship while exploring the everyday wonders of Earth from the perspective of the alien visitors. The story maintains a light and playful tone, suitable for younger audiences, and emphasizes positive values such as curiosity, empathy, and problem-solving. The resolution ties up the narrative neatly, with the Dynosis Kids successfully recovering their spaceship and bidding farewell to their new friends, leaving a lasting impression of mutual respect and camaraderie.