An estranged father and son are brought together by a young crane named Karl as they trace a family of the birds on their migratory journey from Russia to Africa

一对分居已久的父亲和儿子被一只名叫卡尔的小鹤联系在了一起，他们追踪着卡尔所在的鹤群从俄罗斯一直到非洲。