Mel asks hunky Scott Taylor to go to the school Christmas disco with her. But as she gets nearer to the date she gets cold feet and decides that Scott won't really like her. Thinking that he's helping, Brian morphs into Mel and goes on the date in her place - but gets on with Scott rather better than he bargained for... Lucy is cast as Mary in The Nativity Play at school, but gives up her role so that Wendy can please her pushy parents and have the part in her place. But instead of being grateful, Wendy begins to turn into a really demanding starlet. And all the while, Josh tries desperately to teach Brian and Sophie about Christmas - particularly the importance of buying his present.