The Eye of Horus, a mystical glass orb was excavated from an Egyptian tomb by renowned archaeologist Howard Carter in 1922. Taken to the British Museum it lay dormant until broken in an idiotic accident. Unseen by anyone, the four Egyptian Kitten spirits within escaped.
The kittens, seeking a place to settle, allowed themselves to be guided by Yuu who said "If you take an alignment from the Pole Star on Midsummer's Day through the Pyramids, and another through Stonehenge, those lines will cross at one of the most sacred and mystical places on Earth. A place called... Northwood."
They settled into a suburban house (which they paid for with Egyptian gold), and made some attempts to integrate with the local community.