Just get season three off eBay or Amazon and find out for yourself. It's the best.
In short, the Xindi attacked Earth, were going to attack again and so Enterprise was turned into a warship and sent into the Delphic Expanse to find and stop them at any cost. Lizard men, time travel, planet-killing superweapons, alternate futures, religious fanatics, space pirates (you'll never believe who!), a visit to Western Planet, giant fish flying even bigger starships, a group of misfit soldiers and even a ship full of Zombie Vulcans. But not in that order.
