When Vish Puri, India's Most Private Detective, learns he's won the long-coveted International Detective of the Year award, it's supposed to be a secret. But within hours, it seems all of Delhi knows - and his indomitable Mummy-ji announces she'll be coming with him to the ceremony in London, never mind that she's not been invited. To add to his woes, a senior government bureaucrat gives him an undercover mission he can't refuse. Puri is tasked with tracking down India's most-wanted fugitive - a billionaire pharmaceutical fraudster codenamed Bombay Duck, who's rumoured to be hiding in the British capital. Puri's only spending a week in London - and he's already promised his wife he won't work during their once-in-a-lifetime trip. In desperation, he enlists the help of his reluctant nephew Jags and dives headfirst into the case.