After long days of hard work, Koala Dad finally faces a sweet yet daunting challenge in his life: how to spend time with his baby and become the most competent all-around father. Overwhelmed and at his wit's end, he finally receives a response from above. A magical Haku, always full of passion and often coming up with bizarre ideas, becomes Koala Dad's parenting assistant. What a "terrible" start—from then on, everything becomes thrilling, crazy, and utterly uncontrollable. However, to help his baby become a brave explorer and see the wider world, Koala Dad must gather his courage and embark on adventurous journeys with the baby and the magical Haku. The scorching desert, the deep jungle, the towering mountains, the boundless grasslands... even the distant dinosaur era witnesses their wild and frenzied escapades...