A group of ten friends known as Manjummel Boys go for a trip at Kodaikanal and enjoy the adventure.On their return journey one friend suggests the Guna Caves where famous Kamal Hassan movie Guna was shot.The friends reach the cave and enter restricted area even after seeing warning signs they all explore and enjoy the adventure inside the caves.Until one of the friend Subhash falls into a hole whose depth cannot be measured all friends try possible ways to connect with him but nothing works.The friends decide to take help of locals,forest guard and cops but all have one common answer for them that the hole is a devil's kitchen and till date no one has come out alive.