Little blue and little yellow share wonderful adventures.One day, they can't find one another. When they finally meet, they are overjoyed. They hug until they become green. But where did little blue and little yellow go? Are they lost?
最好的朋友小蓝和小黄共同经历了一次神奇的冒险。有一天，小蓝找不到小黄了。当他们终于相遇的时候，他们开心极了。他们抱在了一起，直到变成了绿。可是，小蓝和小黄到哪里去了呢？他们消失了吗？

"An unusual, imaginative, stimulating, and appealing picture book." -- -- The Horn Book