Munna is in love with the voice of popular Radio Jockey Jhanvi. Her effervescent greeting of ‘Good Morrrning Mumbai’ on her daily radio show makes Munna’s heart skip a beat each time he listens to her. Life is beautiful for Munna his ‘dadagirl’ business is flourishing, he listens besottedly to the radio for hours every day, he dreams of marrying Jhanvi. However, there is just one minor problem. Jhanvi thinks Munna is a Professor of History. And in all her innocence, Jhanvi even invites Munna to give a history lecture to her family. As Munna tries to sort out this entanglement in his otherwise perfect life, Circuit comes up with a bright solution. And just when he thinks he’s got his problem solved, the arrival of a figure from history finds Munna facing a most unusual case of the past catching up with the present.