
John Blackthorne, an English ship pilot, whose vessel wrecked upon the Japanese coast in the early 17th century is forced to deal with the two most powerful men in Japan in these days. He is thrown in the midst of a war between Toranaga and Ishido, who struggle for the title of Shogun which will give ultimate power to the one who possesses it.

Set in early 17th-century Japan, shipwrecked English navigator John Blackthorne finds intrigue and culture shock in a feudal society that puts a premium on honor. A rival Lord sentences Blackthorne to death.

After Lord Toronaga rescues Blackthorn from prison, he enlists him as his aide and names him, 'Anjin-san'. Mariko is directed to tutor Anjin-san in the language and customs of Japan.

Blackthorne and Mariko begin a romance; Toronaga continues to build his army for a battle with Ishido. Anjin-san proves his mettle during an earthquake and is honored by Toranaga for bravery. Mariko's husband Buntaro, arrives in Anjiro.