Season 39 of Global‘s “Survivor” is just around the corner — and 20 brand-new castaways have just been announced, along with how legendary winners Boston Rob Mariano and Sandra Diaz-Twine will affect the game.

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The theme of the 39th season is “Island of the Idols”. The twist? Instead of competing for the million-dollar prize, veterans Mariano and Diaz-Twine will serve as mentors to the new group of competitors.

Throughout the 39 days on the Mamanuca Islands in Fiji, the castaways will have the opportunity to visit the mysterious “Island of the Idols” to learn new skills and strategies.

When selected to visit the island, each player will have to decide if they should put their knowledge to the test for a chance at an advantage in the game, or risk losing something very important in the process.

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“For our 39th season, we are bringing back two of our most dominant winners to serve as mentors to a new group of castaways,” executive producer and host Jeff Probst said in a press release.

“It’s a ‘Survivor’ boot camp where each week, players will be instructed on a different facet of the game and then have a chance to test what they’ve learned for a shot at an advantage.”

This season of “Survivor” will also see its first Canadian compete, 60-year-old Tom Laidlaw from Brampton, Ontario.

Get to know all of the new players in the gallery below before tuning in to the 90-minute premiere episode of “Survivor: Island of the Idols” on Wednesday, Sept. 25, at 8 p.m. ET/PT on Global.

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Meet The Castaways Of ‘Survivor: Island Of The Idols’