Lana, the younger twin sister with an obsession for her sister's husband, plans to impersonate her sister, Hana, and seduce him during a two-week cruise. She believes she was meant to be with him and aims to conceive his child under the guise of Hana. Lana carefully mimics Hana's appearance, mannerisms, and voice while planning every detail of this deception. Her goal is to bind herself permanently to him by becoming pregnant.