After waking up in a hospital, a boy named Tsubasa Ichinose is introduced to strangers claiming to be his family members. The Ichinose family, including his mother Minako, father Kakeru, grandmother Sachie, grandfather Kozo, little sister Shiori, and himself, all grapple with amnesia after a car accident. Struggling to rebuild their memories, they face the challenge of starting afresh. Despite their determination to overcome this obstacle together, revisiting their home unearths the truths of their past selves. Amidst the shadows of hidden secrets, Tsubasa remains optimistic that their unified bond can withstand the strain of forgotten lives.