You can legally stream or rent the movie on these major platforms: : Available for streaming with a subscription. Amazon Prime Video : Rent or buy the digital version.
"अंडमान के दक्षिण में, जहाँ तूफान कभी नहीं रुकता, द्वीप छिपा है।" ("South of Andaman, where the storm never stops, the island hides.") index of journey 2 the mysterious island hindi work
For a visual breakdown of the story and its ending in Hindi: You can legally stream or rent the movie