The Vikings have a legend amongst them. A story about how an outsider came from another world, and saved their tribes from a terrible monster. This is the basic outlay, multiple movies have been made on this theme, yes. Beowulf (the animated version), The 13th Warrior (Antonio Banderas) and finally Outlander to name a few. Michael Crichton has also penned a book on the same theme. The different thing about Outlander is that it actually managed to plug a few holes in the story and come across as a more coherent legend. Not to mention FX.
Outlander takes us to the past, time of the Vikings when our hero who has come from another world (who surprisingly has the same physiology as us humans, beating the theory of evolution to the ground) and with his ship comes a terrible creature … the Moorwen. The creature in its bloodlust wreaks havoc amongst the hapless Vikings. Its upto Kainan (the hero) to reunite the tribes and forge his modern technology with the Viking weapons to bring the creature down and kill it before it can spawn more of its kind.
I would suggest download the torrent and watch it on your machine rather than spending those hard earned rupees in a theatre. Good movie if you have friends, chips and some ale to give you company.