Teenagers Paromita Mehta, Nihal Advani, Darius Engineer and Sunidhi Menon all fall sick with chicken pox at the same time. Stuck at home and with each other, they form the Chicken Pox Club. The summer workshop on detection and investigations the three of them had signed up for is closed to them now, so they decide to do some detecting on their own. They don?t need to look far for a mystery to solve. A week back, their neighbour, Sandra Saldanha, poet and Eng Lit professor, had fallen to her death from her balcony, straight into their apartment?s swimming pool.