A Japanese man agrees to work with Eric's company -- but he stipulates everything must be ""clean and tidy."" So Eric leaves it up to Alison to clean the office while he goes home to take care of the rat that crawled up through his drainpipe. But, as usual, Alison spends her day gabbing on the phone... Eric arrives at home to find that the rats have multiplied and the exterminator he's hired is useless. And to make matters worse, Liz shows up with her boyfriend picketing for ""rights for rats."" Meanwhile, Maria takes the children to the amusement park and ends up in a high-speed police chase....