Hakui chokyo (1986)

Devour the flesh and blood of the beast, you fallen angels in filthy white coats!!

Night. Mayumi Kurioka is a nurse. Today is the night shift. As she is patrolling the hallway after the lights are turned off, a man in black stockings suddenly appears, abducts Mayumi, and takes her away in a car...! When she comes to, she is tackled by two men...