Succession handlar om maktspelen, politiken och familjebanden kring en åldrande, rik mediemogul och hans fyra barn.

Naz who is a paediatrician loses her baby during pregnancy. Even though her husband wants another baby, she refuses to go through the same thing all over again. She goes to Italy for a conference and meets Ali Nejat there.

Mizuguchi Saki is an outstanding fashion magazine editor who grew up in a modern and liberal family. She meets Obara Koichi who is the ace of the Air Rescue Wing of the Air Self Defence Force. He grew up in a strict military family and is the classic straight-laced guy.