Featuring cosmic adventures, a race through time, the disappearance of adults across the world, the terrible villainy of Darkseid, Lex Luthor's Injustice Gang, Starro, the introduction of Prometheus, and more! Collects JLA #10-23, JLA ANNUAL #2, JLA: SECRET FILES & ORIGINS #2, JLA: WORLD WITHOUT GROWNUPS #1-2, and NEW YEAR'S EVIL: PROMETHEUS #1.