Architect Keisuke is asked by a friend to do a renovation at an extremely low price, but the request is so unreasonable that he decides to decline and visits the friend's home to say no. However, there he meets his friend's wife, Sayaka, who pleads with him in a deeply sincere and devoted manner. Touched by her warmth and genuine feelings, Keisuke eventually agrees to take on the job. As days pass, their relationship gradually develops into hidden passion. Their bold and intense encounters grow more frequent, but as the renovation nears completion, the chances to see each other dwindle. What will become of their relationship? The story unfolds with gripping anticipation.