April, 1590: Hideyoshi finally launches his campaign to conquer Hojo’s Odawara Castle. Meanwhile, Kanetsugu and the Uesugi forces attack Matsuida Castle, but due to Hojo’s vassal Daido Masashige’s strong defense, a stalemate of advancing and retreating ensues.  Kanetsugu has a secret plan, however; he takes a dog with him and enters the mountains.  That moonlit night above a hill, Kanetsugu hears beautiful sounds of someone playing a flute.
No matter how formidable a fortress this is...
Cualquier castillo inconquistable 
caerá si le quitan el agua.
Cualquier castillo inconquistable 
caerá si le quitan el agua.
Même une forteresse imprenable
 n’est plus rien sans eau.
Por mais formidável que sejam suas defesas,