Blast off to Mars in a little red wagon and leave the boring adult world behind. Calvin and his trusty tiger Hobbes are pushing the limits of their imagination in this riotous collection. Sick of sharing the planet with people like his neighbor Susie Derkins, Calvin launches the exclusive G.R.O.S.S. Club to assert his independence and keep enemies at bay. When dealing with his parents or teachers becomes too tedious, he quickly assumes the identities of his favorite alter-egos, taking to the skies as the fearless Spaceman Spiff or solving gritty mysteries as the hardboiled private eye Tracer Bullet. From surviving desert islands to fending off a terrifying invasion of mutant snowmen, the daily life of this six-year-old is packed with action. The stories beautifully balance these high-energy escapades with quiet moments of stargazing, where a boy and his stuffed tiger ponder the universe. Packed with sharp social commentary and endless mischief, this volume celebrates the brilliant, restless energy of childhood and the power of a truly wild imagination.