A lovely girlfriend, pregnant with the college student Zuo Ci, yearns to be reprimanded. One night, having lost his keys, he's invited inside by his beautiful neighbor, Song Dao. "My husband's not home..." she says, her face flushed and body hot from drinking, as she approaches, persistently caressing his vulnerable nipples. "Just playing with my nipples doesn't count as cheating..." Under the weight of sweet words and passionate whispers, his resistance begins to crumble. Unable to respond to his girlfriend, he turns his attention to the neighbor's wife's tongue and fingertips—