In Lisbon, a german married couple is about to get aboard the legendary n°28 tramway, but how should you act when the brakes let go and embark you on a vertiginous race... with a baby on board. 在里斯本，一对德国已婚夫妇即将登上传说中的n°28电车道。而当刹车松开，迎头一场声势浩大的比赛，你该如何应对——随行的还有一个婴儿。