Zachary Carter is not your average player. He has a record of having dated more than 5 girls simultaneously in a single week, yet girls still fall for him. Robin Heart, on the other hand, is a pretty anti-social girl that is known to be quite aggressive whenever someone speaks to her. The two meet after Zack agreed to a specific bet: Zack would try to seduce the heartless Heart and make her fall in love with him within a month. He insists he will not fall for her in return for it is "strictly business". But will he keep his promise? Will he win his bet, or is Robin his biggest challenge yet?