•  Though Coulson and May are growing closer, Coulson remains unaware of the dark secret May is hiding beneath the surface. Meanwhile, Aida is unrelenting in her search for the Darkhold, on 'Marvel's Agents of S.H.I.E.L.D.,' Tuesday, January 10 (10:00-11:00

Though Coulson and May are growing closer, Coulson remains unaware of the dark secret May is hiding beneath the surface. Meanwhile, Aida is unrelenting in her search for the Darkhold, on 'Marvel's Agents of S.H.I.E.L.D.,' Tuesday, January 10 (10:00-11:00 (Photo : GETTY IMAGES/ Eric McCandless)

Following its thrilling midseason finale, "Agents of S.H.I.E.L.D." Season 4 is coming back strong with its brand new storyline. Recently, ABC has released a new promo for the new episode, teasing that a revolution is brewing over.

As the series changes its course, viewers will get to see humans pitted against Life Model Decoys, according to Comicbook. The new clip offers a preview of a revolution meant to make things difficult for S.H.I.E.L.D., as it shows Aida leading a throng of LMDs who are determined to go up against the S.H.I.E.L.D. agents. Agent Coulson and his crew are all in the line of fire, while Fitz and Daisy Johnson are at the mercy of their enemies.

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The promo warns, "Life Model Decoys are preparing a revolution, and S.H.I.E.L.D. will pay."

ABC previously released the official plot description and promo clip for episode 9, titled "Broken Promises." The new episode will see Agent Melinda May's dark secret ruin Phil Coulson and his team without Coulson knowing.

"Agent Melinda May's deadly secret could destroy Phil Coulson and the team. Though Coulson and May are growing closer, Coulson remains unaware of the dark secret May is hiding beneath the surface. Meanwhile, Aida is unrelenting in her search for the Darkhold," reads the synopsis on Spoilers Guide.

As for the LMD storyline, the synopsis suggests that the Agents of S.H.I.E.L.D. will find themselves up against several new ongoing threats, including the anti-inhuman watchdogs who are gaining political influence with Senator Nadeer and are uniting behind an enigmatic benefactor. Elsewhere in the episode, Aida will abduct Agent May and replace her with an LMD. Her plans for May and the team remain to be seen.

The midseason premiere episode will pave the way for the LMD story arc. While the series is on its five-week hiatus, ABC has made the 6-part episode of the "Slingshot" miniseries available for online viewing. Its story centers on the life of Elena "Yo-Yo" Rodriguez, a.k.a. Slingshot, between seasons 3 and 4.

"Agents of S.H.I.E.L.D." is based on the Marvel comics S.H.I.E.L.D., a fictional spy agency in a world of superheroes. Its new episode is scheduled to premiere on Jan. 10 on ABC.

Watch the preview for "Agents of S.H.I.E.L.D." Season 4, episode 9 here: