テレビシリーズの大人気を受けて制作された劇場版仕掛人第1作。各種設定はテレビシリーズを元にしている。注目点は主人公2名、梅安と左内のキャストが変更されていることで、梅安は田宮二郎、左内を高橋幸治が演じている。半右衛門はテレビ版と同じく山村聡が演じた。原作「おんなごろし」と短編「梅雨の湯豆腐」をミックスしたストーリー。なお梅安が結果的に手に掛けることになる実の妹・お吉について、原作・テレビ版とは異なり梅安が自分の妹だと最後まではっきり悟らないといったアレンジがなされている。

Ten years before the outbreak of the Second World War in Asia, a Japanese Go master and his Chinese rival meet in China to play a game of Go (loosely described as an Asian version of chess). It soon becomes evident that the Chinese master's son is the most talented player that the Japanese master has ever encountered, and he convinces the boy's father to let him bring the child back to Japan to train him as a professional Go player. Years pass, and as the young Chinese master grows to maturity in Japan, the Japanese invasion of China forces him to choose between his triumphant career and his loyalty to his native country. His decision is complicated by his marriage to the daughter of the Japanese master, with whom he has produced a child. His choice will profoundly alter the lives of two families. Their saga serves as a reflection of the tragic relations between their two great countries, and the possibility of reconciliation and healing.