My Prezi has been overwritten, please restore to the previously saved version as soon as possible!

After saving my completed Prezi on my computer last night, I checked on my iPad this morning and found that there was almost nothing at all on the Prezi. I then looked back at the computer to find that it had saved the blank version of the Prezi that was on my iPad! Please restore to the previously saved version as I am due to present this today! :( the edit link is: http://prezi.com/tgjpzvhaz7bk/edit/#0 please help!