Motu finds out that his father, Mohan Sinha, an expert astronomer, is held captive by extra-terrestrial forces. Motu Patlu and friends embark on a space expedition to save him and bring him back.

Motu Patlu and friends are visiting Petersburg where a evil ghost Claudius binds Motu in a agreement and uses him to destroy Romanika, village of good ghosts. It's on Patlu and friends to save ...