After falling and hitting his head at work, a man returns to the office and starts seeing mysterious numbers above women's heads. During his welcome-back party, he notices the number over a tipsy coworker rising as she grows increasingly seductive. Could it be the percentage chance that she will have sex with him? He tests the theory by flirting with her, watches the figure soar, and confirms his new power. Using the numbers to guide his moves, he successfully seduces more coworkers, an insurance saleswoman, and a door-to-door saleswoman. Any chance can be pushed close to 100%, turning him into an unstoppable playboy.