Adam and Kono's honeymoon will go terribly, terribly wrong on Hawaii Five-0.

'Hawaii Five-0' Season 6: Willie Garson Back On Set [PHOTO], What Is The Art Thief After?

First Gabriel Waincroft (Christopher Sean) crashed their wedding (see video below). Now, the up-and-coming big bad will give the newlyweds one vacation that they will certainly never forget.

Just hour after averting a nuclear crisis, the Five-0 team will be on high alert once more during the season 6 premiere. While McGarrett (Alex O'Loughlin) and Co. attempt to track a criminal that his hell bent on unearthing buried treasure, Adam (Ian Anthony Dale) and Kono (Grace Park) will receive an unwanted visit from Chin's former brother-in-law.

'Hawaii Five-0' Season 6: Danny Becomes Too 'Protective' Of McGarrett, McDanno Story Promised

"In the sixth season premiere, a murder leads Five-0 to investigate a centuries-old pirate story involving buried treasure, and it seems that the killer is using the back of a stolen painting as a treasure map," CBS teased. "Also, the morning after their wedding, Kono and Adam are kidnapped and tortured by Gabriel, and Danny (Scott Caan) shows concern for McGarrett regarding Catherine's (Michele Borth) return to the island."

Yikes! Five-0 is certainly gearing up for a pulse-pounding premiere.

Why Gabriel want to subject Adam and Kono to enhanced interrogation remains unknown. Perhaps the criminal is hoping Mr. Noshimuri's old Yakuza connections will still have some pull.

Find out more when Hawaii Five-0 returns to CBS on Sept. 25 at 10 p.m. ET.

Tags: Hawaii Five-O television CBS