The book is based on a true and moving story. The painter girl accidentally adopted the wolf king's orphan cub on the grassland when collecting materials for her art works. She named the wolf cub Green and brought it back to Chengdu to feed. But a bustling city is not an ideal place for a wild grassland wolf to grow, the girl then took Green back to the grassland, all the way to follow the trails of the wolves. After a winter of efforts, Green successfully returned to the wolves.

本书是一部纪实小说， 讲述了一个真实感人的故事。一位画家女孩在一次草原采风中意外收养了狼王遗孤，为其取名格林，并带回成都喂养。但繁华的都市无法容纳一匹野性的草原狼，看着格林孤独迷茫的样子，女孩带着它重返草原，一路追寻狼群的踪迹。然而，由人类抚养长大的狼，是不被野生狼群接受的。经历了千辛万苦，九死一生，女孩终于目送格林成功地融入狼群。全书饱蘸笔墨，情感细腻、催人泪下，同时配以作者实拍照片，让整个故事更加饱满生动。