We had a sitter with our kids and they know they

we had a sitter with our kids and they know they cant play with my ipod, but they did and now when i plug it in it says it is in recovery mode and i need to restore it, so i try and it starts out with me naming my ipod again and then it says it is restoring but then it cant sync any of my music, photos or movies back on it. also before i plugged it in this time i could go to the picture folders on it but when i would click on one it would show all the yellow squares around the pictures to click on but there was no picture there.