Muskaan is named after the lead female role in the film (Gracy Singh). It is a typical Bollywood film of romance boosted by songs and given a twist by a murder incident.
Sameer Oberoi leads a full life with a budding career, affluence and a close group of friends Shikha, Satin, Jahnvi and Sharad. Jahnvi falls in love with Sameer and hopes to marry him some day while Sameer has ideas of an ideal dream girl wafting into his life.
While he is on the look-out for a new model, Sameer accidentally stumbles across Muskaan through wrong telephonic conversations.
Following the rule of chance and co-incidences, both Sameer and Muskaan land up in Simla at the same time little recognizing each other. They get inexorably drawn towards each other and romance blossoms.
At this juncture there is an unexpected murder – Jahnvi is mysteriously killed and Sameer becomes the prime suspect for Inspector Vikram Rajput. Investigations follow, interrogations are made and enquiries are answered. The plot is finally resolved, much to everyone’s relief and Sameer is proved innocent. It is now time for the two lovers to continue with their life of togetherness and everlastingness