Set during the Edo period. Ichiro Onodera’s father dies suddenly due to a fire at home. 19-year-old Ichiro Onodera (Kento Nagayama) comes home. His father was supposed to prepare Sankin-kotai and lead the lines of Sankin-kotai to Edo. After his father's death, Ichiro Onodera leads the lines of Sankin-kotai and heads to Edo. During the journey, he faces various cases and schemes which targets his family.