What is the meaning of the allusion in the sentence below?

When I left, the kittens were all peacefully sleeping on my bed. When I returned, it was Lord of the Flies.
the status quo
a barbarous rivalry
a reversal of prior circumstances

The meaning of the allusion in the sentence is a reversal of prior circumstances. The comparison of the situation changing from peaceful kittens sleeping to a chaotic Lord of the Flies implies that there has been a significant and unexpected shift in the atmosphere or behavior.