Autumn is always romantic in Boston. Yellow ginkgo leaves are scattered in the wind, and the streets are full of colorful leaves. Daniel runs into a girl who looks exactly like his wife Adele, who went missing 20 years ago. She is a beautiful woman who was born with a genetic clone of her wife Adele, and Daniel, unaware of this, tries to dig into her secret. What would be Daniel's choice in the face of the truth confronted by countless dangers and difficulties?