Actress Park Ha Sun worked hard to transform into a police officer.

On the new SBS Wednesday/Thursday drama special "Three Days' (script Lim Eun Hee, producer Shin Kyung Soo) Park Ha Sun is playing the role of female cop Yoon Bo Won.

In the role, Yoon Bo Won plays the role of a cop helping the bodyguard Han Tae Kyung (Park Yoo ChuN) as he is a strong personality.

At this, Park Ha Sun cut his hair that he had grown out for several years and was passionate. He goes to the police station for advice and reads police theory for the first time, perfecting action acting in every way possible.

Park Ha Sun has been going to acting school from last year to enjoy high skilled action. Ordinarily, he likes climbing and other sports and wanted to do all action scenes without a substitute.

Park Ha Sun said, "As much as it's a role that I haven't played, I have a new dedication. To perfect the role of a female cop, I've been dedicated to the action. You'll see a new side of Park Ha Sun" as she was confident.

"Three Days" is about an incident happening on the resort of a president to enjoy a 3day 4 night itinerary and a missing person with three shots. It will take the baton after "You Who Came from the Stars" broadcast now and will be broadcast in February.