Billu Goes Missing In Jokergunj

When Chandramukhi reaches Joker Gunj she sees all the people dressed in joker with mobile in their hands. They come to know that whoever takes the pic in joker's attire over there, they turn into joker. They go and stay at Joker Gunj's guest house. Later in the night Billu has an encounter with the joker. What will happen now?