We reported that Cube Entertainment was going to hold their first ever family concert! The announcement was then followed up with the very first 'Fantasy Land' teaser video for the upcoming "United Cube Concert". In the video, B2ST's Yoseob is seen texting the rest of the Cube family about the huge event. Every Cube star (including members of B2ST, 4minute, and G.NA) respond with enthusiasm, but they're all puzzled as to why they didn't hear back from Dongwoon.� It incites a flurry of messages, as everyone bugs Dongwoon to respond. He suddenly appears behind Yoseob, and laughs as he quips that he already knew about the concert. In the end, poor Yoseob looks dejected as he sulkily steps up for his turn on the shoot. The concert will take place on August 14th. Fans can grab tickets through the Interpark website starting from June 14th at 8:00PM KST. Stay tuned to allkpop for more 'Fantasy Land' updates!