When devoted Sierra Leone husband/father Solomon Vandy's (
Djimon Hounsou) family is dispersed by rebel militias and his young son Dia (Kagiso Kuypers) conscripted to serve as a child solider, Solomon is sent to work as a diamond miner. As luck has it, he finds a gigantic 100-karat "pink"; Zimbabwe-born solider of fortune Danny (
Leonardo DiCaprio) happens to hear of this, and soon the two undertake a tense and untrusting agreement: Danny will help Solomon find his family ... and a buyer for the diamond. But Danny is set onto a moral-lesson-learning path -- not only by his relationship with Solomon, but also by a new friendship with U.S. reporter Maddy (
Jennifer Connelly). Though she, too, distrusts Danny, she wants the story he can give her about the ins and outs of the illegal arms and diamond traffic. Danny dismisses Maddy's work in Sierra Leone and in other war zones as "writing about it" -- that is, observing and exploiting, just as he does. But she feels a passion for the cause, especially when she meets Solomon. Though Maddy is cynical about the effects of U.S media, she believes she
can help by "writing about it." So she agrees to the plan: Danny will help her as she helps Solomon, and, in turn, Solomon will find his hidden diamond for Danny.