K, a fresh recruit, is initiated into the world of cocksucking by her instructor. She timidly starts, licking and teasing the head, but soon finds her rhythm, slurping and spitting along the shaft. He grows harder, guiding her head, teaching her to take him deeper. She struggles, but her eagerness wins out. He face-fucks her, making her gag and choke, but she persists, determined to master her new skill.