Following another Sunflower Society killing, Sonu is the lead suspect. He hopes to uncover the true criminal from the shady new tenants in the building.
Sonu finds himself at the center of the mess as his connection with Rosie entangles him further in the murder case. The case is finally closed with the revelation of the unexpected murderer.
All the facts, the usual suspects, and the murder weapon now paint a clearer picture for officers Digendra and Tambe. The dark side of Iyer gets revealed.
Sonu and Rosie's romance continues. Mr Kapoor's maid, Kamini Bai, sheds more light on the case that seems to implicate Sonu yet again. Digendra finds the actual murder weapon at an unlikely place.
Sonu sells a box of unused syringes, creating further complications for himself and is picked up by Tambe for interrogation. Impressed by Sonu's bad boy image, Aanchal asks him for a night out.
The police question Sonu and the Ahujas, and Sonu takes them through his adventures in Punjab. Romance brews in Digendra's life. Sunflower Society comes across Rosie, the mysterious new tenant.
The investigation takes a turn when Digendra and Tambe find new information connecting Sonu to the case. But a shocking revelation leads them to a new and unlikely suspect.
While Officers DG and Tambe probe Sonu, Mr. and Mrs. Ahuja try to get rid of the evidence. Later, Mr. Ahuja lands in an awkward situation which is likely to get him caught.
Sonu is back at Sunflower Society. Police officers Tambe and Digendra race to arrest him for his involvement in the Kapoor murder case. An unexpected theft and confession add a twist to the tale.