Possible Spoilers What I think will happen in the finale?

The doctor and Amy will visit the oldest cliff face in the universe and discover that the Pandorica box will open sooner than even he could imagine and rushes to an alien and collective museum with dead remains of many alien species where the box is due to be opened through the crack in the universe and bring dead things back to life with cybermen rebuilding their remains with the other aliens too.The aliens start of being silent and then start rebuilding their voices.The doctor and Amy rush out of the museum in search of river song once the creatures voices are back the creatures will be indestructible and will cause the reverse of the big bang causing the universe to be ripped out of time never to have existed so the doctor, Amy and river song rush to make sure silence does not fall causing the crack in the universe to enlarge causing another big bang.Can the doctor, Amy and river song defeat Pandorica?