Shovels full of throwaway gags and silly aliens fail to lighten this overstuffed and entirely predictable debut.

Handed a planetary lease signed by Adam and Eve, 13-year-old Giles learns that since humanity has done a lousy job of caring for the Earth, everyone will be transported to the concrete wasteland of Desoleen to make way for new owners unless he removes all the trash and graffiti from Manhattan Island in 24 hours and adds five million leaves to clear the air. Fortunately he has allies—notably cute, blue-skinned lawyer (soon girlfriend) Tula and gelatinous genius inventor (and shoe fetishist) Melissa Sprinkles. The latter provides both deceptively tiny “flyplanes” with magic paint-removing rays and street-cleaning droids that replicate themselves into an army using the trash they pick up and then turn into giant trees. Unfortunately, purple hyperbrat Princess Petulance is hot to trot from her own despoiled planet and so stands ready to sabotage the clean-up in any cheating way she can. Mihaley squeezes in sibling issues, the requisite bully (who ends up totally pwned by Giles’ new techno toys) and aptly named alien life forms like a “wino tree” before thoroughly contrived last-minute treachery is scotched thanks to hordes of children inspired to finish the makeover by Giles’ wheelchair-bound eco-blogger buddy Navida.

A teenager takes up alchemy where his suddenly vanished mom left off and falls afoul of police, vicious thugs and a digital intelligence determined to separate him into generic components.

Battling grief and a loser mentality (the latter reinforced by widespread derision after a quixotic attempt to save a duck frozen into a pond), Steve is electrified when his eccentric great-aunt Shannon transforms an ordinary “clock” into a “lock.” She informs him that he, too, can use words to work transformations—and perhaps discover what happened to his mother. Stronger on action than logic, the plot then proceeds to evolve into a wild tangle. On the one hand, Steve is pursued by police for a series of kidnappings and house trashings that are actually the work of rival alchemist John Dee and his murderous crew, and on the other, he travels back and forth between this plane and a “World of Pieces” where everything is made of numbers and a hypnotic voice urges him to dissolve into a protean liquid. Bunn works a predictable transformation on Steve, who rescues everybody, and caps his debut with a tidy, melodramatic, thoroughly contrived happy ending.