在这部婴猴和他的朋友 第一季动画片中,在很久很久以前，有一个圆圆的冰激凌形状的美丽星球Yootopia。这里生活着见义勇为的婴猴；心地善良的沙狐；可爱的欧亚红松鼠；万物发明王橧帽猴；性格倔强的狐猴。这五位好朋友照顾着“生命之树”，过着愉快和平的生活。然而，糟糕的是，yoohoo和他的朋友们竟不小心遗失了“生命之树”上的绿色种子，如果不找到被丢失的绿色种子，他们居住的星球将永远消失。因此，yoohoo和他的朋友们为了为了寻找绿色种子，走遍世界各地，途中帮助了处于危机中的朋友。
究竟yoohoo和他的朋友们能否找到所有被丢失的种子并挽救星球呢？让我们来一同开启冒险之旅吧！
YooHoo and Friends are back to save the Yootopia suffering from pollution in the environment. In their peaceful village, their new friends are flocking to search for shelter after losing their homes on Earth. YooHoo and Friends get along with their new friends in a town filled with joy and friendship. There is a magical spring in the Yootopia, where people sat that it can make you youthful forever with a couple of sips, it also helps our friends keep pure hearts and the peace in the village. One day, Mr. Big Boss learns about this miraculous spring and plans to make big profits selling this enchanted water. He and his never-helpful-assistants, Oops and Coops, watch for an opportunity to pollute YooHoo and Friends beautiful town and drive them out to build a factory in Yootopia to produce and sell "Live Forever" water bottles.
