In the 1980s, Martin grew up with three friends who were as close as brothers in an alley in Beijing. On the eve of high school graduation, an accident caused by Martin separated him and his three brothers. When his youth came to an end, Martin went abroad and disappeared from sight ever since. Many years later, Martin, who had become the vice president of a listed company, suddenly suffered from a brain tumor. He was alone and prepared to face death calmly, but there was a faint bond in his heart that he could not let go of. Martin wants to resolve old feuds and regain friendships before he dies. Four middle-aged brothers work together to start a business. Everyone's lives are changing. Old friendships slowly revive in each other's hearts, and Martin also rekindles hope in life.