Doubles Choi Do-jin - Isaiah - Lee Jun-joon 'Prepare with M Countdown and go out!'

Doubles members Choi Do-jin, Isaiah and Lee Ha-jun are entering the broadcasting station to attend the Mnet 'M Countdowndown' schedule at Sangam-dong CJ ENM in Seoul Mapo District on the afternoon of May 6.

About M COUNTDOWN

M Countdown is a South Korean music program broadcast by Mnet. The show features appearances by popular music artists who also perform live on stage. It is broadcast from CJ E&M Center Studio in Sangam-dong, Mapo District, Seoul.  Wikipedia