Christmas has come just a little early for "Attack on Titans" fans with the debut of the trailer for the long-awaited second season of the hit anime series.

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The adaptation of Hajime Isayama’s bestselling manga, “Attack on Titan” is set in a world where the last remnants of humanity live in cities surrounded by enormous walls that provide some protection against enormous, flesh-eating humanoids known as Titans. The story, which debuted in 2009, initially centers on Eren Yeager, his adopted sister Mikasa Ackerman and childhood friend Armin Arlert, but expands to include numerous other characters — including the fan-favorite Levi — as we begin to learn the truth about the Titans.

Released by Funimation, which will distribute Season Two in the United States and Canada, the new footage begins with breach by the Titans of Wall Rose, and the human response, delivering glimpses of the main characters as well as plenty of Titan-vs.-Titan action.

Premiering in April, more than three and a half years following the conclusion of Season One, the second season was originally announced for 2016. However, following rumors that it wouldn’t hit that target date, the staff of “Attack on Titan” officially announced a spring 2017 return.