Bob Morley's role in "The 100" Season 4 will going to be cut short while "Mako: Islands of Secrets" actor Chai Romruen joins cast. Also, The CW has released the official plot summary and preview clip of the premiere episode.

Cast member Bob Morley's appearance in "The 100" Season 4 is going to be cut short. According to iTech Post, series creator Jason Rothenberg hinted that the 31-year old Australian actor will likely die in the upcoming installment.

Bob Morley plays the character of Bellamy Blake who happens to be the leader of The 100.

On the other hand, "Mako: Islands of Secrets" actor Chai Romruen is set to play a recurring role in the 4th season of "The 100". The 27-year old Australian actor will play as Ilan.

Ilan will join Clarke Griffin (Eliza Taylor) as one of the new grounders in The 100, Movie News Guide has learned.

As for the official plot synopsis of "The 100" Season 4, The 100 Wikia notes, "The 100 have fought to survive. That fight has torn them apart, turned them against each other, and taken the lives of their closest friends. In season three, our heroes found themselves at the epicenters of both the Grounder world and the struggle for Arkadia's soul.

Despite their best efforts, all out war appeared unavoidable until a new, even more dangerous threat, one that had been quietly rising all along, exploded to the surface: ALIE, the A.I. that ended the world, offered relief from pain and eternal life in the "City of Light," but as her ranks grew, it quickly became clear that she was building an army dedicated to controlling all sentient life on Earth. This was no longer a battle between warring factions; it was a fight for humanity itself."

"The 100" Season 4 is scheduled to premiere on Feb. 1, 2017, at 9:00 p.m. EST first and exclusive on The CW.

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