Two popular actresses will soon compete for the number one spot in K-Dramaland and they will both appear in medical dramas.

Kim Tae Hee returns to the small screen in the SBS medical drama "Yong Pal Yi" with co-star Joo Won.

Song Hye Kyo makes her comeback in the KBS disaster drama "Descendants of the Sun" with co-star Song Joong Ki.

Kim will play a patient, while Song plays a doctor who works for a humanitarian medical organization.

The dramas will overlap as "Yong Pal Yi" begins in August after the end of the melodrama "Mask," while "Descendants of the Sun" begins in September.

"Yong Pal Yi" tells the story of a man who becomes a doctor but is crippled by debt after paying for his sister's expensive kidney dialysis. Joo Won plays the indebted doctor, while Kim Tae Hee will play a young heiress recovering from a coma. After Joo Won helps her recover, she seeks revenge on those who put her in a coma.

"I have always wanted to play an heiress role. I want to show people new aspect of an heiress from the one that is usually portrayed in dramas," Kim said in an interview with the Korean media outlet Joongang Daily.

Kim Tae Hee's last k-drama was the historical drama "Jang Ok Jung." After that she appeared in the Chinese drama Wang Xizhi, playing the wife of the famous Chinese calligrapher.

In "Descendants of the Sun," Song Hye Kyo will play Kang Mo Yeon, a doctor who works with the international charity organization Doctors Without Borders. Song Joong Ki will play a Special Forces officer. The two characters will not hit it off from the start but working together in dangerous situations helps to bring them closer and eventually leads them to fall in love.

Song spoke about her character in a recent interview with the magazine Elle Korea.

"I'll be playing the character of Doctor Kang Mo Yeon in the drama 'Descendants of the Sun.' I haven't taken on a lively character like this one in a Korean production in a long time," said Song. "You could say she's the grown-up version of my 'Full House' character."

Song Hye Kyo's last k-drama was "That Winter the Wind Blows" with co-star Jo in Sung. After that she starred in the k-movie "My Brilliant Life," followed by the Chinese films "The Crossing" and "The Queens."

Which actress do you think will win the ratings war? We wish them both the best.