Kenta and his wife both work full-time and live busy lives, so he stays at his wife's parents' home. With his father-in-law deceased, Kenta lives peacefully with his mother-in-law and wife. One day, Kenta catches a cold and takes a sick day from work. His caring mother-in-law tenderly nurses him back to health, unintentionally stirring his arousal. Seeing his discomfort, she says, "You must be in pain like this," and begins relieving him with handjob and blowjob. After that, no longer satisfied with sex with his wife, Kenta starts visiting his mother-in-law every night...