MONSTA X’s show “AREA51: THE CODE” is set in September 1989 in Area 51 Korea, which is described as the region of the “Alien Human Freedom Agreement.” An explosion in the area causes great confusion, and MONSTA X is sent back to correct the past as “E.S.C’s chosen private investigators.” They must travel back to 1989 and stop the explosion before it happens.
(Source: Soompi)