Alice Mongoose and Alistair Rat have a lovely lunch shop. Alice runs it during the daytime, and Alistair, who is nocturnal, manages the night shift. Everything is working well--until a helpful customer suggests that they put up a sign. Alice and Alistair agree that their lunch shop should have a sign. And they assume they agree on what the sign should say. When the delivery arrives, Alice and Alistair both have a bad surprise. They must work together and come up with an agreeable solution, and they learn that it is never wise to assume.