No matter how hard she tries, Triangle doesn't roll like the circles, or stack like the squares...so she sets off to find friends that look exactly like her. But when she finds the other triangles, playtime isn't as fun. She misses the shapes that roll and stack; she misses being different. So she starts a new quest, one that gets all of the different shapes playing and having fun together!

不論三角形多努力，它無法像圓形一樣滾動，也無法像正方形一樣疊放......所以它決定尋找與自己完全相同的朋友。但是，當它找到其他三角形時，玩樂並不像以前那麼有趣。它想念那些能滾動和疊放的形狀；它想念與眾不同。於是，它展開了一個新的探險，讓所有不同的形狀一起玩樂並快樂！