Hmm Half the World Away. "I would like to leave this city, this old town don't smell too pretty". (Sung in watery, wobbly, breathy, girly whirly voice - natch!)
Here is my guess
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A university aged teenager can't wait to leave home, ignores mum, rolls eyes, huffs and puffs, bangs the big massive front door closed on big massive house without saying bye etc. etc.
Younger sibling bewildered by theses shenanigans looks on in limpid eyed, yet cute and endearing fashion. (Clutching onto JL's must-have Xmas soft toy for this year, you know? The one that they will appear to have made too few of in order to get people desperate to own one...)
Teen/parent respectively go into JL, spot some kind of wonderful present, smile wistfully, teen returns home for Christmas, hugs mum tight with eyes shut sort of scene, exchange of presents, realises home is where the heart is. Cute younger sibling happy. The end.
I'm in the wrong job, I'm wasted in nursing, I could earn my fortune writing formulaic sentimental adverts. 