Agents of SHIELD is rallying fans for the fall finale, and in true Marvel fashion, the series will leave fans with a major shocker.

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Titled "...Ye Who Enter Here," the Dec. 2 episode will take Coulson (Clark Gregg) and his team to the lost city.

"S.H.I.E.L.D. and HYDRA converge on the alien city they've been racing towards, in a desperate fight to gain control of the obelisk," said showrunners Jed Whedon and Maurissa Tancharoen, according to TV Line. "In the end, our team -- and our show -- will be changed forever."

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Don't worry, however, the series probably won't pull another Captain America: The Winter Soldier shake up again. Probably.

"Pieces of the giant puzzle start to fall into place," Tancharoen told Entertainment Weekly, adding that Coulson and Skye (Chloe Bennet) may be affected by the trip.

On the upside, fans can look forward to learning Skye's birth name quite soon.

Find out more when Agents of SHIELD airs Tuesday at 9 p.m. ET on ABC. Click the video below to see a preview for he series' next episode, "...Ye Who Enter Here."

Tags: Marvel's Agents of S.H.I.E.L.D. television ABC Marvel