SEASON PREMIERE: Only the die-hardest of sci-fi fans should give this Season 3 premiere of this CBS summer drama series another chance. Zoo was enough of a mess in Season 1, and even messier in Season 2. Now it’s trying a time-shift reboot. The premise of this series is that a mutated population of animals, in the very near future, threatened to turn against the human race, and did – while an attempted cure led to humans becoming sterilized (don’t ask). That was around 2017, supposedly. Now, for this new season, it’s a decade later, 2027, and things aren’t much better. Not the human race, not the animal population – and, apparently, not network television’s idea of entertainment.