“Hawaii Five-0” will serve up an explosive Finale for Season 7, and “explosive” is a term the series takes quite literally. Finale season is upon us, and the show's executive producer, Peter Lenkov is busy getting fans hyped for the closer. Although the finale won’t air until May 12, anxious viewers can get their first look at McGarrett’s (Alex O’Loughlin) next white-knuckle scheme courtesy of Lenkov’s social media sneak peeks.

‘Hawaii Five-0’ doubles down for finale

Titled “Ua mau ke ea o ka ʻāina i ka pono,” episode 25 will feature a callback to one of season 7’s ongoing storylines. While Oahu’s premier crime-fighting unit has already managed to put the Chess Piece Killer mystery to bed, track down stolen nuclear material, and save Chin’s niece, there is one case the squad has yet to wrap up - and that involves the island’s burgeoning plague of sex traffickers.

As McGarrett and co. but their backs into the rescue of girls trapped in a sex trafficking ring from earlier in the season, CBS promises that Kono (Grace Park) will find herself emotionally invested in the case, leading her to make a life-changing decision before the credits roll.

First addressed in episode 19 (“Puka ‘ana”), the exploitation of minors lit a fire under Kono. Let’s hope the cop has a bit of that anger tucked away for round two, because, based on Lenkov’s teasers, our heroes will need a little extra kick if they want to pull through their next case.

“Every season we try to do epic premieres & season finales,” Lenkov tweeted during filming. “Well... I think we might have reset the bar on this year's. Closed down the H3 [highway] for two days. And that's just for one sequence.”

Check out the videos via Lenkov’s Twitter, including a look at McGarrett and Danno (Scott Caan) gearing up for battle:

What’s next on ‘Hawaii Five-0’?

Coming up in “Wehe 'ana (Prelude),” Danny will get a blast from the past.

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We’ve seen the New Jersey transplant work a case back in his home state, but the CBS drama has yet to delve into his pre-Five-0 days as a detective with the Honolulu Police Department. Luckily April 28’s hour will serve to satiate our curiosity.

“Danny protects a coma patient showing signs of waking who was the key witness from his last HPD case before he met Steve and joined Five-0,” CBS teased.

Find out more when “Hawaii Five-0” airs Friday at 9 p.m. ET on CBS.