Milestone! This is the first appearance of Krypto in the current day, side by side with Superman and the rest of his modern Family. Prepare for super-dickery sans pareil. Superman is this close to putting Krypto to sleep in this one. It all begins when Krypto returns from space after years and years of absence, and he's immediately drawn to Jimmy Olsen's signal watch, used for stuff that really shouldn't be on Superman's radar, you spoiled Metropolis citizens, you.