Roy manages to make a duplicate of himself using the school photocopier and sticky tape. He gets "Roy 2.0" to do all his jobs for him but after a while realises that his ideas are not all going to plan.
Roy accidentally passes onto his family, classmates and teachers an infection which causes their thoughts to appear in cartoon bubbles over their heads to their considerable embarrassment.
The students are worried when they see Miss Jervis crying about someone called "Pete". They think she must have broken up with her boyfriend and try to make her feel better - including by finding her a new man in her life.
Becky tricks Roy into believing that their mum is going to have a baby. However the "news" has a completely unexpected result as Roy turns back into a baby himself. This causes a lot of excitement among his family, friends and teachers but also quite a lot of problems as well with Mr Hammond in particular having to rise to the challenge.
Roy and his friends are really tired of Mr. Hammond's strictness and dull teaching. In lessons Niall paints a picture of Mr. Hammond on Roy's arm. Roy tries to wash it off before Mr. Hammond notices but it won't go and it isn't long before the new "Party Hammond" makes a big impression on everyone else with his laid-back ways and sense of fun.
Roy's parents are away for the day to attend a wedding to the annoyance of Roy's dad who wants to watch the United game. Becky is asked to keep her eye on Roy but she has her own plans for the day - as indeed do other people.
Roy pretends to be ill to avoid doing P.E. at school - the real reason is because Deco always makes fun of him in that lesson. During a fund raising day for an animal shelter a gorilla face is drawn on Roy and he turns into a gorilla causing all sort of mayhem and trying to get his revenge on Deco.
