Date Masamune stands on the cusp of his first battle, a young heir destined to lead the Date clan of Mutsu Province. Seeking strength at a pivotal moment, he prays within the Date family shrine and encounters a dragon deity. This entity gifts him a mystical jewel, unlocking a profound ability: to summon the ancestral lords of his lineage for guidance and aid throughout his journey.

By his side are his close companions, the steadfast retainer Katakura Kojūrō Kagetsuna and Megohime, part of his inner circle. He also navigates challenges alongside his cousin, the key figure Date Shigezane. The dragon god's power connects Masamune directly to generations past. He can call upon the wisdom and support of the 9th Lord Masamune, the 2nd Lord Munemura, the 3rd Lord Yoshihiro, the 4th Lord Masayori, the 5th Lord Munetsuna, the 6th Lord Motomune, the 7th Lord Yukitomo, the 10th Lord Ujimune, and the 12th Lord Shigemune.

Other enigmatic figures cross his path, including a mysterious monkey-masked individual and entities named Anpon and Monmo. The narrative chronicles his youthful growth, as he leverages this ancestral legacy to forge his path as a leader and warrior within the historical context of his clan.