Middleaged Arthur lives in a London suburban old house with his daughter Elena and her husband Damon. Burdened by social morality and family responsibilities, Arthur hides his true inner feelings. Damon stays in the household not for his wife Elena, but for Arthur, toward whom he holds obsessive, possessive love.
Elena has an extramarital affair with her partner Luke. As Damon keeps pressing Arthur, Arthur struggles between shame, guilt and hidden desire, even relying on antidepressants. After Elena discovers their secret relationship, she chooses to end her marriage and sets them free.
Breaking ethical shackles, the two move into a new home. Damon gradually shifts from forceful possession to tender care. At last, Arthur dares to face his genuine affection. They build a shelter where they no longer need to conceal their love after countless pains and conflicts.
