迫于生计,罗莎里奥(凯特·德尔·卡斯蒂洛 Kate del Castillo 饰)不得不离开了自己挚爱的儿子卡利托斯(阿德里安·阿龙索 Adrian Alonso 饰),只身前往洛杉矶赚钱养家。临行前,她将卡利托斯托付给了母亲班尼塔(Angelina Peláez 饰),并允诺一定会回来接他。可几年过去,罗莎里奥似乎里当初的承诺越来越远。 班尼塔的去世让九岁的卡利托斯成为了无依无靠的孤儿,然而,和当地诸多相同情况的孩子们不同,他并没有向艰苦的生活屈服,也没有放纵生活一味堕落,一个坚定的信念支撑着他
A group of tired commuters have caught the last train home, ready to hop into their beds for the night. However, their train soon veers off-course and crashes into an abandoned tunnel. The three surviving commuters; withdrawn mother Yi Ling, her son Luca