That is what Dream Catcher have written in their new teaser image, and it is also what many fans are asking back at them. Could 'What' be the title of their comeback song? 

After releasing two mysterious codes, Dream Catcher have been sending interesting signals to their fanclub 'InSomnia'. As the name goes, cracking the codes to these enigmatic teasers will surely keep the fans awake! 

Stay tuned for more updates.