When the teacher tells her class that they can think of almost everything as a math problem, one student acquires a math anxiety which becomes a real curse.

A transmission received from outer space in a combination of different Earth languages tells of an alien schoolboy's fantastic excuse for being late to school again.

With a mysterious new principal and fifth-grade graduation fast approaching, will Michael K. and his friends be able to find the missing Brainwave before the chief of the Anti-Alien Agency uses it to destroy a planet?