Bulu tries to convince his friends not to play near the new railway, and to stay with him at the abandoned train tracks. But they do not listen to him. The drivers of an approaching train see the children on the line. Unable to stop in time, they decide to divert to the abandoned tracks ...
綿羊BuLu和朋友一向在已棄用的舊火車軌旁嬉戲。可是,當其他綿羊知道新火車軌有很多乾草堆後,便往新火車軌去。BuLu知道那裡危險,決定自己搬運乾草堆在舊火車軌旁,吸引朋友回來,可是朋友仍然喜歡在新火車軌上,只有BuLu在舊火車軌上。不遠處,火車來了,看見車軌上有太多綿羊,車長只好轉用本已棄用的舊火車軌……