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James Malfoy-Potter broke his cousin's, Rose Weasley's, time turner over the holidays. Now most of the next generation kids are stuck in 1995.
Four blondes, three pairs of twins, two Rons, and several redheads are stuck under one roof for the Christmas holidays.

Warning: First fan-fiction.
This has Drarry kids. Don't like? Get out.
Don't expect this to be like the original HP series
Disclaimer: I don't own Harry Potter, obviously.