Edwer Thissell must solve a murder on the planet Sirene where everyone wears masks to indicate their social status and communicate by playing instruments for any social situation.
"Hopper never dreamed that there was a connection between the Bee School and her missing father--but it turns out that Albert Gracie was also a student of the mysterious coding school. His disappearance can only be the work of Dr. One-Zero. Once a star pupil of the Bee School, Dr. One-Zero is now a green-skinned villain on the hunt for 'the most powerful turtle in the world.' And the coders may be the only ones who can stop him"--Back cover.
Getafix, the druid, has broken his golden sickle and can't make any more magic potion, so his friends go to Lutetia to have a new one made, but must first find Metallurgix, the sicklesmith, who has mysteriously disappeared.
"The lunar colony is slowly winding down like a small town circumvented by a new highway. Our hero, the mooncop, makes his daily rounds. His beat grows ever smaller. The population dwindles. A young girl runs away, an old lady loses her dog, an automaton wanders off from the Museum of the Moon"--Back cover.
Amu struggles to get her stolen Guardian Characters back from a teacher who grew bitter after his own egg was broken--and the School Guardians attempt to put the teacher's egg back together.
