ASHFORD, Ireland -- "Vikings," History's brooding and brutal drama about the eighth-century Nordic warrior Ragnar Lothbrok, is growing up quickly.
After a six-month shoot in Ireland, season two debuts tonight sporting a bigger scale, more confident pace and stronger entertainment than last year's uneven, at-times plodding inaugural run.
The opening scene pits Ragnar (Travis Fimmel) against rebellious brother Rollo (Clive Standen) in a spear-and-axe spatterfest involving more than 300 stuntmen and extras filmed in an abandoned Irish quarry transformed into an apocalyptic moonscape. It's striking stuff accomplished with choreography and muscle, not CGI.
Later episodes feature a four-year jump forward in plotline, a dizzying expansion of Ragnar's family and military challenges, and a potential alliance with the calculating ruler of southern England, King Ecbert of Wessex (new cast member Linus Roache, a veteran English actor probably best known to American audiences as Assistant District Attorney Michael Cutter on the last three seasons of "Law & Order"). Joining Ragnar in his raiding party is former monk and slave Athelstan (George Blagden), who has sheathed his Christian piety in favor of a pagan sword and bow.
Ragnar's boy Bjorn isn't staying a grumpy kid for long, either. After the opening episode, he sprouts into Alexander Ludwig, who at 6-foot-3 is more than able to look his burly, braided-mohawk father in the eye.
Who's the mother? That's an awkward one. Out is shield maiden Lagertha (Katheryn Winnick) and in is princess Auslaug (Alyssa Sutherland).
Michael Hirst, the creator, writer and showrunner for the series, openly hopes to keep "Vikings" plundering the airwaves long after Ragnar meets his death, as history -- if not History -- says he must.
"We're jumping forward in time so that Ragnar's sons can get up and running. I want to follow what happens to his sons, because they had extraordinary histories too," said Hirst, who has become a specialist in dramatizing history with the film "Elizabeth" and his first Ireland-filmed TV series, "The Tudors."
So how far does Hirst think he can sail his Viking longboat?
"The Viking period basically lasted for 400 years, before the last country in Scandinavia was Christianized. So we've got another 300 and some years to go. I don't really want to stop the story until they find America!"
Roache says he's looking forward to his character growing closer to Ragnar and the other Vikings, whether as ally or enemy. "In many ways I feel like I'm in a TV show called ‘Saxons,' " he said with a smile. "I'm looking forward to the moment where these two worlds collide."
For 21-year-old Ludwig, the bonding with star Fimmel, an earthy-spoken Aussie, has been easy -- and mutually crude.
"Travis and I are really tight. It's like one big prank war when you get on the set. You've just got to watch out," Ludwig said.
Ludwig already learned diving, rolling and swordplay for his role as Cato in "The Hunger Games," and got buffed up for his recent turn as a doomed Navy SEAL in Mark Wahlberg's "Lone Survivor."
When he had to film a fight-training scene with Standen -- a 6-foot-2 expert swordsman himself -- neither wanted to hold back.
"The directors and Michael want to make it real, so the fighting is brutal if the actors play ball," he said. "You never know on set how much an actor will give in scenes that are physical."
While the first season got broadly positive reviews, it won little industry recognition.
The lack of Emmy recognition, Hirst said, "was ridiculous."
"We're out here in Ireland, to some extent a disadvantage, because we don't bump into all these guys on Hollywood Boulevard who are voting with their pals," he said. "But this is a big show and pretty soon, no one is going to be able to ignore it."