Sam (Tobey Maguire) goes to prison to pick up his brother Tommy (Jake Gyllenhaal) who has just been released from prison. After returning home, his mother warmly welcomes him, but his father sneers. Sam served in the US Marine Corps and was sent to Afghanistan, so this party was not only a welcome party for Tommy, but also a farewell party for Sam. His father always compared the perfect Sam with the poor Tommy, which made the latter leave angrily. Sam reluctantly bid farewell to his beloved wife Grace (Natalie Portman) and two daughters and rushed to the battlefield. Unfortunately, the Black Hawk helicopter he was riding was shot down, and he and his subordinates were captured. Frightened by the power of the Afghan thugs, Sam was forced to surrender and killed his subordinates with his own hands, which made him full of contradictions. The rear thought Sam was killed in the battle, and the whole family was immersed in grief. Tommy wakes up with a determination to change himself and slowly integrates into the family. Not only does the relationship between father and son improve, but he also comforts Grace and the children and develops a subtle relationship. At this time, news comes that Sam has survived... This film is a remake of the 2004 film "Blood Brothers".