Season 6 of "Hawaii Five-O" is set to open up on a swash-buckling adventure story as the crew takes to an ancient legend about the island dating back to the 19th century.

According to TV Guide, Episode 1 is titled "Mai ho'oni i ka wai lana mâlie," which translates to "Do Not Disturb the Water that is Tranquil." It will air on broadcast network CBS this Friday, Sept. 25 at 9 p.m. EDT.

Considering all the action and edge-of-your-seat situations of the explosive Season 5 finale, this episode is poised to take fans by surprise as it transitions directly over from the wedding to the honeymoon and more.

According to Spoilers Guide, there are several arcs to the episode's story that will take place, which will start with the end of Adam and Kono's wedding and segue into a murder that takes place and has close ties to a local legend.

That local legend is the story of pirates that came to the island in the 19th century and left behind buried treasure, but no one has ever found it. That of course brings out the treasure hunters and there will be a man on the show that will be using a stolen painting as a treasure map to gain the advantage.

To top that story off, Adam and Kono are in for the honeymoon of nightmares. The morning after their nuptials, they are immediately taken hostage by Gabe and tortured. Most fans already saw that coming, just not so soon.

There is also growing concern that will be coming from Danny as he worries about the effect of Catherine's return on McGarret. Even though she will be sticking around some this season, there have been reports that their romance will not quite be taking off.

See the preview for the premiere episode below.