At 1 pm on September 10th, a poster with the profile of CL appeared in intense red lighting. At the bottom of the poster, '2020 09 14 1PM KST', which means 1 p.m. Korean time on September 14, 2020, is marked, and the text'+ POST UP +'is written in the center to see what this really means. It is causing curiosity.

At the top of the poster, credits including Baauer and Holly, who produced the music in the intro video, are released, making various speculations.