Rani is off to Mauritius to visit Nani and her cousins. Even on holiday, she’s eager to sniff out a new story! While playing in the grounds of the family house, Rani comes across an old metal box with a note inside containing a cryptic clue. This sets her on the trail of pirate treasure across the island – from waterfalls to luxury hotels to a series of strange stone pyramids. But when news of the pirate puzzle accidentally gets out, Rani finds herself in a race against time to uncover the long-buried treasure!