"Smoking is injurious to health" is the story of Ranbir and Gauri. It's an ill-timed visit back home that forces Ranbir to revisit his past. And meet Gauri again. And remember everything he had conveniently decided to forget. Everyone always told Ranbir that his chain smoking would kill him. And one day it nearly does, as he finds himself, car-less and helpless in front of Gauri's house. It holds so many memories for both of them; good, bad, ugly. They meet as near strangers but as time progresses Ranbir has no choice but to face the truth, his truth. When Gauri finally confronts him, he's shaken with the enormity of what passed. And then reality dawns on him - and his present. The twist in the tale unfolds as Ranbir realizes that Gauri hasn't just waited for him to come back, but actually to take him back. Way back. Love, life, friendship, morality and mortality collide.