A mature, commanding female teacher is completely reduced to a vessel for lust. Every day she serves the cocks of different men around her—a sleazy old man, a scumbag classmate, a cuckolded husband—none of them spared her. Teacher Lin, once lofty and untouchable, is thoroughly conquered after being used again and again, her body becoming the most obedient tool. What her diary records is no longer teaching, but each day of being fucked into a daze. The short drama shatters the dignity of the 'teacher' to pieces. The greater the contrast, the deeper the fall. From the classroom to the bed, all that remains is her instinct to be filled.