Barnashilpo Rahasya is the Bangla translation of King Ottokar’s Sceptre, an early Tintin album by Hergé. Tintin and Snowy travel to the small kingdom of Syldavia, where the king’s symbolic sceptre is in danger of being stolen by agents from the neighbouring country.
It is one of the most loved early Tintin stories, with mountain trains, palace intrigue, and the kind of clean adventure pacing that made the series famous.