In the 18th century, there was a well-known Ferris wheel named "Angel Wheel". Birds were caged in each passenger car, so that passengers could enjoy scenery and bird singing at the same time. "Angel Wheel" only served adults. Two children hoped to free the birds and pretended to be adults, but the guard ...在十八世紀，有一座宏偉的摩天輪，它是著名的「天使之輪」。它的每個座廂都安放了一些小鳥，讓乘客一邊欣賞美景，一邊享受小鳥的歌聲。「天使之輪」建設於一個只招待成人的公園裡。一個女孩子和一個男孩子十分同情那些被剝奪自由的小鳥，他們決定偽裝成年人，進入園內釋放小鳥，卻中途被守衛識破……
