Mary Lennox is born in India to wealthy British parents who never wanted her. When her parents suddenly die, she is sent back to England to live with her uncle. She meets her sickly cousin, and the two children find a wondrous secret garden lost in the grounds of Misselthwaite Manor.

Paddington travels to Peru to visit his beloved Aunt Lucy, who now resides at the Home for Retired Bears. With the Brown Family in tow, a thrilling adventure ensues when a mystery plunges them into an unexpected journey through the Amazon rainforest and up to the mountain peaks of Peru.