Back in May, FX announced it had picked up a new television series called Legion—an X-Men-themed show that follows the “most powerful mutant ever.” During a panel discussion at Comic-Con Saturday, the cable channel and Marvel presented the first trailer for the new drama. And it looks like it’s going to be epic.

The show tells the story of David Haller—played by Dan Stevens of Downtown Abbey—an unstable man who’s schizophrenia has put him in and out of psychiatric hospitals over the years. After meeting a fellow patient in an institution, he begins to question his mental illness, and eventually confronts the possibility that he may be more than human.

Though the series is based on the Marvel character that debuted in 1985, FX revealed that the creator, Noah Hawley, will depict the mutant world in a whole new light.

“We’ve come to expect excellence from Noah Hawley and with Legion he has delivered another major creative achievement,” Nick Grad, FX’s president of original programing, said in a press release. “Just as he did in reimagining Fargo, he is bringing an entirely new aesthetic and sensibility to the enormously popular and richly represented X-Men world.”

Legion will premiere in early 2017. In addition to Stevens, names like Aubrey Plaza, Jean Smart, and Rachel Keller will star in the series.

You can check out the trailer out above.