Goro Amemiya works as an OB-GYN in a small rural town and is a huge fan of upcoming idol Ai Hoshino. After an unexpected meeting, Goro ends up dying suddenly only to be reborn as one of Ai's children; a boy named Aquamarine Hoshino (or Aqua for short). He and his twin sister Ruby then grows up as one of show-biz's biggest secrets (from manga).