The Secret Garden (KIRISHIMA Rira)

From Dazzling Scans:

Gil Ra-im is poor and humble, but beautiful, who works as a stuntwoman. Kim Ju-won is the rich and arrogant CEO of one of the top companies in the country. Ju-won's growing attraction for Ra-im both disturbs yet fascinates him, and no matter how hard he tries he just can't stay away from her. As if that weren't enough, a strange series of events results in them swapping bodies?!

Based on the hit SBS Korean TV drama Secret Garden.