SBS's 'Running Man' teased the appearances of heartthrob actor Yoo Ah In and one of Korea's iconic 'grandmother' actresses, Kim Hae Sook (whom you might know from 'Winter Sonata'), in next week's Chuseok special episode!

With the contrast between the teenage pin-up boy and the charismatic actress, viewers are looking forward to the character dynamics for next Sunday's broadcast.

Check out the preview below!

SEE ALSO: Netflix unveils first teaser poster for 'Goodbye Earth' starring Yoo Ah In