Christmas, the time of year when peace on earth and goodwill to all men rings out across the land - unless elaborate festive decorating has anything to do with it. This one-off film meets the people who spend each year going into seasonal battle with their neighbours in a bid to come out on top in the extreme decorating stakes. As well as the race to get the lights up and working for the big switch on, there's rivalries, tears and tantrums, and sometimes the risk of electrocution. And behind the brash bulbs and dazzling displays lies a range of surprisingly emotional personal stories as to why Christmas lights have become an obsession for some.