10-year-old Freddy Spicer writes letters to his parents-who he believes are working at a Brussels-sprouts farm in Outer Castonga, with no internet or phone access. In fact, Freddy's parents are secret agents out of the country on a highly classified mission-but Freddy has NO IDEA! Throw in: Grandad's X-Ray specs; a laser blaster that accidentally destroys the shed; a strange new neighbour flirting with grandad; and suspicious goings-on at school...