The movie consists of 4 parts about lascivious wives who visit the hospital to take care of their sick husbands while also being sexual tools to help other male patients relieve their physiological needs after many exhausting days lying in bed. When they arrive at their husband's bedside, the eager eyes are always lurking around the seductive woman. It's only a matter of time before they seize the opportunity to turn her into a sex slave for themselves. It's not wrong, those frozen sparrows in a cold place like this hospital are just waiting for warmth from a butterfly to immediately dispel the cold, and the sparrows will start singing again, just like the married woman and the male patient in the next bed. Both only help each other satisfy their sexual desires.