You can tell by the hardness of the mattress that you're lying on that something is very different. You went to sleep in your room, on your soft, lovely bed with your quilt wrapped around you - and you've woken up on a hard mattress with no quilt or anything covering you.
When you open your eyes, they have to adjust to the lack of light, only a harsh red light opposite the bunk bed you're asleep on. The scene is familiar - you spent a brief time in the Navy section of the school's cadet force, and this is what you were forced to sleep on when you went on a trip to one of the boats down at the docks. But that doesn't explain whats going on here - have you gone back in time?
Looking round, you can't see much, except for your body, which is looking strange for some reason, but you pass it off as a trick of the light, and turn your attention back to whats just happened. Feeling around, your hand slips under the pillow - and you feel something there. Pulling it out, you're surprised to find it's a mobile phone. You frown - if your memory is right, you don't recall leaving your phone under there... you left all your possessions in the bag which you had tucked under the bunk-bed. Your brow furrows as the mystery continues, but nonetheless you pull the phone from out of the covers. It's on, and the light brightens up the screen so harshly you rub your eyes and point it away for a few seconds. When you pull it back, you get another shock - on the desktop, instead of the picture of you and your sister you've had since you got the phone, it's a picture of classmate and fellow cadet Jordan Lane with some girl you presume is his girlfriend! It certainly isn't your phone. With your eyesight adjusting to the light, you realize it's not even the same make as your phone. You frown, deeply confused - why would Jordan's phone be in your bed?
Looking around, you find your theory of being put in the past go into the gutter as you realize that the people surrounding you aren't the ones that were around you this time last year. They're younger - the new recruits. You're still in 2008. But... why are you here? And then everything fits into place. Looking back at your body, you realize why it looked so strange before... it's not even your body! It's Jordan Lane's, and that explains the phone and your current situation!