Only die-hard ‘Enterprise’ fans are likely to cling on

“Enterprise” is about to blandly go where no show has gone before.

In the Season 2 finale (8 p.m. UPN), the ship and its crew head to the brink of an outer-space Bermuda Triangle known as the Delphic Expanse, charting a course for war in an effort to rescue Earth, humanity and UPN’s ratings.

The episode promises a new plot line and loads of computer-generated pyrotechnics next season, but the show’s usual hokey writing and uneasy acting clearly haven’t changed a bit.

The conflict starts with a devastating salvo, when a mysterious probe from the far reaches of the galaxy cuts a swath of ruin from Florida to Venezuela, killing 7 million people.

Capt. Archer (Scott Bakula) and the Enterprise, the only Earth vessel with the technology to confront this menace, set out on their new mission -- saving the planet.

The attackers turn out to be an alien race called the Xindi, launching a preemptive strike after learning that Earthlings will destroy their world in 400 years. According to a time traveler, the probe was merely a test and the Xindi are building a bigger weapon.

To find the Xindi, the Enterprise must venture into the dreaded Expanse, a zone so wicked that it turns even Klingons into scaredy-cats. In the Expanse, human bodies and the laws of physics apparently are turned inside out.

As the Enterprise begins its voyage, Sub-Commander T’Pol (Jolene Blalock) receives an order from the Vulcans and must choose between her duty to her high command and her illogical loyalty to Capt. Archer. Meanwhile, Chief Engineer Trip Tucker (Connor Trinneer) suffers a personal blow when he learns that his sister and his hometown were zapped in the attack.

The episode ends on a teasing note as Archer orders his ensign, “Straight and steady, Mr. Mayweather, let’s see what’s in there.” But only die-hard Trekkies are likely to be lured along for the ride.