A married woman offers an umbrella to a young deliveryman soaked by a sudden downpour, and her small kindness stays with him. Each delivery brings them a little closer. One day he arrives to hear a man shouting inside and sees bruises on her arm while she silently looks down. Realizing what she may be enduring, he gives her the key to his studio apartment and tells her she can use it whenever she needs—a gesture that opens the door to their affair.