The rookie boy group 'TOO' is now gearing for their first-ever reality show titled "Too Mystery."

The boy group introduced their new show with a trailer on July 7 through Mnet's digital studio, M2. The video reveals a new chapter for the group as they level up from portraying light and uplifting image to a more profound and mysterious role.

The teaser video started with the TOO members trying to escape from something, hinting the viewers of their upcoming concept. Some fans suspect it would be a thriller concept, which makes them anticipate the variety show even more.

The short and intriguing trailer was an invitation to fans worldwide into the new world of reality, Hellokpop wrote. The members' sense of entertainment, teamwork, and chemistry are expected to be revealed in their new roles as they delve more in their individuality through a reality show.

Moreover, TOO will be releasing their second mini-album "Running TOOgether" on July 15. The upcoming mini-album is TOO's first comeback since their debut on April 1.

The group's schedule poster revealed five songs that were sincerely prepared by the boy for their fans. Aside from "Count 1, 2" as the title track, other songs included in the mini-album are "Step By Step," "Better," "Taillight," and "Dancing In The Moonlight."

According to Allkpop, "Dancing Moonlight" is originally a song by the French-American rock band "King Harvest," released in the 1970s, and now TOO will be releasing a remake.

The boys' photo teasers showed extraordinary visual appeal, primarily through the close-up shots that express quite well the vibe of summer heat.

The first episode of the boys' new haunting reality show "TOO Mystery" will be launched on M2's digital channel on July 14 at 10 PM KST.

New episodes will be available every Tuesday and Friday at the same time slot. It will also be available to viewers on Mnet in early August, Hellokpop reported.