Nathan's a regular boy: cheeky, fun-loving, and completely terrified of water. Anything wetter that a shower and he freaks. Ms Loti is his Wonder-Woman teacher. And Lucy is just a regular girl until she gets a weird headache on the way to school camp.

Things get weirder. The headaches spread like a disease. Lucy goes manic in the pool. Storm-clouds gather. Marcus sees a flying saucer. The storm breaks. The floods begin. The phones stop working. Then everyone goes weird!

Is Lucy deliberately spreading her germs? Is no-one safe?

Oh: Ms Loti's okay! She's still soldiering on, so Nathan sticks to her like glue as the Alien Invasion gets into full swing. Huh? What? Alien Invasion!? Yes, and they're the nicest; uh; 'people' you'll ever meet.

Humanity is "going, going, gone" but Nathan and Ms Loti might just hold out forever. Or will he get lonely and finally take a drink of Girl Germs...?