Three Hoodies Save The World

After David's mum buys him a star from one of those strange magazines with photos of aliens and what you look like after your fiftieth face lift, he thinks nothing more of it.
That's when strange things begin to happen. Not least of which is being forced to go, along with two friends, to an alien planet; only to be told that an army of mutant lizoids is going to kill them, then destroy that world and finally the Earth. Nothing too serious, there.
Only when they find out that the girl who is helping them, isn't a girl, and that man who took them there isn't a man, or even human for that matter, do things begin to get a little fuzzy.
With less than one week to go they have to save three worlds from destruction, remain cool and have a good time. But worst of all - they have to be home in time for school on Monday.

Part one in a series of four.