Iris and Cathon are shocked to discover how big and heavy the first microwave oven was. Turns out that inventing it involved melting a bar of chocolate.

Cathon bakes Iris a very special kind of bread for her birthday, and pretty soon the two friends have gone down the rabbit hole, in search of the origins of bread. They even tell the tale of a whole army sculpted from bread.

Cathon has a new best friend—Ruben the goldfish. Iris’s latest hobby is fishing. A fine kettle of fish to be sure. The fishing rod is an amazing piece of gear, but where did it come from?

Cathon has found something wonderful in the recycling bin—a birdsong clock. But Iris isn’t totally on board with her friend’s taste, so she seeks a compromise. She wonders how people told time before clocks.