Brussels. Leo, a Spanish metro driver, while conducting his train and arriving at a station, sees a young man in distress on the edge of the platform. He recognizes his son Hugo right before he falls ...
华金（莱昂纳多·斯巴拉格利亚 Leonardo Sbaraglia 饰）是双腿瘫痪的残疾人，终日要与轮椅相伴。然而，华金同时也是一位经验非常丰富的工程技术人员，精通机械学，还拥有着比常人灵敏数倍的听力，凭借着自己出类拔萃的专业知识，华金将自己的生活安排的井井有条。
一天，一位美丽的单身母亲波塔（克拉拉·拉戈 Clara Lago 饰）带着她6岁的小女儿贝蒂（Uma Salduende 饰）前来...