It's the start of a new semester at Big Tree Kindergarten, and Briar, Bramble, Bald Qiang, and all their friends are embarking on a fresh journey of learning and growth. On this day, a new friend arrives at Big Tree Kindergarten: the innocent and clever Qiuqiu, who lives with his grandfather. The children get along kindly, helping and encouraging one another as they continuously learn new life lessons and fascinating scientific knowledge, gradually developing good habits along the way. The arrival of the new friend Qiuqiu and his gentle, kind-hearted Grandpa Qiuqiu adds even more warmth and fun to Forest Town.