On March 16 KST, EXID released the teaser concept for their comeback which features a Microsoft Windows 98 style error message stating: "Connecting F: to EXID_COMEBACKE-20180402 Are you sure you want to continue?"
Their comeback date is set for April 2 at 6 p.m. KST.
This will be a 4-member comeback as Solji still hasn't fully recovered. Their label said, "It's true EXID is preparing for a comeback in early April. Solji is still recovering from her surgery, so this promotion will be a 4-member promotion."