• (L-R) Writer/executive producer Hank Steinberg, actors LaMonica Garrett, Travis Van Winkle, Marissa Neitling, Adam Baldwin, Bridget Regan, Jocko Sims and writer/executive producer Steven Kane attend 'The Last Ship' panel, TNT at Wondercon 2016 at Los Ange

(L-R) Writer/executive producer Hank Steinberg, actors LaMonica Garrett, Travis Van Winkle, Marissa Neitling, Adam Baldwin, Bridget Regan, Jocko Sims and writer/executive producer Steven Kane attend 'The Last Ship' panel, TNT at Wondercon 2016 at Los Ange (Photo : Photo by Frazer Harrison/Getty Images for Turner)

"The Last Ship" Season 3 episode 8 debuts July 31 on TNT. The upcoming segment is titled "Sea Change" and it will see the aftermath of a tragedy in America. Here are the detailed spoilers for the next chapter of the post-apocalyptic series. Read on to find out what happens next.

[Spoiler alert! This article contains spoilers for "The Last Ship" Season 3 episode 8 "Sea Change." Do not read further if you don't wish to know more about it.]

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Fans must brace themselves as Tom Chandler and other Nathan James take on more challenges and attempt to save the world. Not giving away many details, the network has released a brief synopsis teasing more trouble for people in America.

According to the description for "The Last Ship" Season 3 episode 8 "Sea Change" on Spoiler TV, a tragedy strikes America again. The country will try to move on and deal with the recent events. Details about it remain unknown. Fans will have to watch the upcoming segment to find out what actually happens.

In the meantime, Chandler moves forward with his investigation of the possible virus mutation. He finds answers to the questions and tries to figure the threat it poses.

Note: A promo video for "The Last Ship" Season 3 episode 8 is yet to be released. It is expected to be out after the broadcast of episode 7 on July 24. Stay tuned, the trailer will be made available here.

In an interview with Buddy TV, showrunner Hank Steinberg revealed "The Last Ship" Season 3 is about geo-political issues.

"In Season 3, the storyline is split between the action in Asia and the Presidency in the new White House in St. Louis. ... The drama is between geo-political issues of how to hold the country together and the question of how many resources should we give to saving the rest of the world when America is stretched very thin and trying to repair itself," Steinberg said.

"It's a dangerous world out there. The way we keep the audience on their toes, we have to lose people along the way to feel like every time they go out there, you don't know what could happen. We've had to lose some of our favorite characters and favorite actors in the process, but it's what keeps the show appealing and feeling real," he added.

"The Last Ship" Season 3 episode 8 "Sea Change" airs July 31 at 8:00 pm on TNT. More spoilers and updates are expected soon.