You can rent or buy the movie directly through Fandango At Home.
I'm assuming you're referring to a piece of writing or a creative work related to Kung Fu Panda 3 and possibly a mention of "isaidub," which could imply a reference to a dubbing or a specific version of the movie. kung fu panda 3 isaidub
Released in 2016 by DreamWorks Animation, Kung Fu Panda 3 is the third installment in the beloved martial arts comedy franchise. The story follows Po, the legendary Dragon Warrior, as he faces two monumental challenges: You can rent or buy the movie directly
Arjun had no microphone, no script, no studio. But he had watched the first two movies a hundred times. He knew Po's heart. The story follows Po, the legendary Dragon Warrior,
The climax occurs in the Spirit Realm, where Kai nearly defeats Po. However, the combined love and Chi of Po’s friends and his panda family empower him to achieve his ultimate form as the Dragon Warrior