Mates World Was Deleted

Yesterday my mate and I were playing the version 1.5.3 of Minecraft 'Better Together' and then he had to go off, so he saved and quit, went to the Xbox home and turned his console off. Today he went on the game only to find out that the world was gone/deleted, it's not in his storage so it's like the world was never created. Countless hours spent in that world is just gone. Is there anyway to recover this world?