It Grows!

Zac has a problem. He suffers from 'cyberchondria' - he contracts every disease he ever reads about online. His long-suffering girlfriend Jan has had enough. But that's not his only problem. Something is growing in his garden... and it's growing fast! Is it just a cute little plant, or could it be the harbinger of something more sinister? Can Zac and his trusty canine companion Rip, nip it in the bud before it's too late, or will they be pushing up daisies before it's through?