Poom and Neung were childhood enemies—he teased her for being chubby, and she despised his arrogance. Years later, Neung returns from studying abroad. Hoping to avoid him, Poom does her best to stay away, but Neung is determined to prove he still can get his own way. But the more he teases her, the harder it becomes to ignore his growing attraction—until winning means making Poom his.