One day, Tatsumi, who has lost both his job and family, receives an airmail from Malaysia. Inside of it are a photograph of his little brother who has been missing for years and a letter written in mysterious Arabic letters. With a building shown in the photo as a hint, Tatsumi flies to Malaysia. As roaming around, looking for a clue, he meets a prostitute called Ryn. Leading a tough life, Ryn has struck her anger onto her little son. Tatsumi reflects himself on her manner and strikes her driven by an indescribable anger. However, as he learns that she is habitually exploited by Rahman, a man of brothel, Tatsumi strikes Rahman only to be beaten up in return. Ryn and her son save tormented Tatsumi. But he quarrels with Ryn again and jumps out of her house. Then he is saved by a calm old man named Aniu. Tatsumi drops in his house, and ther encounters valuable information.