When Paddington receives a heartfelt letter from his beloved Aunt Lucy, now living comfortably at the Home for Retired Bears nestled deep in the lush mountains of Peru, he knows it’s time to return to the place where his story began. With the Browns—his cherished adopted family from London—by his side, Paddington sets off on what is meant to be a joyful reunion and a chance to show the Browns the wonders of his homeland.
But no sooner have they arrived in the vibrant town of Cusco than the group is swept up in a puzzling mystery. A local legend about a long-lost treasure tied to the bear sanctuary begins to resurface, and strange things start to happen: an old map is discovered tucked inside one of Aunt Lucy’s dusty scrapbooks, a museum curator goes missing, and a suspicious figure begins shadowing their every move.