In April 2015, Dal Shabet posted a picture for their comeback on their Facebook page. On April 10, they posted a picture with the title track "Joker". On April 12, they posted the first teaser for the album. On April 14, they released a teaser for the music video. The official video for the title track "Joker" was released on April 15, the same day as the album.
The EP debuted at number 8 on South Korea's Gaon Album Chart. The title track, "Joker", charted at number 20 on the Gaon Digital Chart, becoming their 8th and last single to reach the Top 20.