"Angel" is a party circle where people who are dying for sex gather. Usually, people who don't even know each other's names gather in this circle to have sex, but by some twist of fate, four pairs of acquaintances came together. A career woman acting as a boss. Her subordinate who is angry with her almost every day. A serious school teacher. His wife who works as a childcare worker. An ordinary everyday young man. His younger schoolgirl sister. A college student with a clean appearance. His college girlfriend boasting exceptional beauty. There is one rule. You must have sex with one of them until morning. A night of jealousy and desire was about to begin.