Season 4 of "Grimm" will be filled with new plots and more trouble once the series returns to NBC this fall.

As "Grimm" fans can recall, Season 3 ended with a daunting cliffhanger as Detective Nick Burkhardt's lost his Grimm powers and Captain Sean Renard was shot and hospitalized.

According to Executive Producer David Greenwalt, Season 4 picks up right where the finale left off and Nick will suffer from an identity-crisis due to his loss of powers.

"If they could cure him and if he could submit to that process, which is going to be horrible -- or at least shocking -- does he want to be a Grimm again?" said the EP, according to Zap2it. "This will go on longer than the zombie thing [at the end of Season 2], but not just interminably. Long enough to really mine the issues around it."

David Giuntoli, who plays Nick Burkhardt, also revealed that "viewers will miss the powers" when the show returns in October.

Burkhardt went on to quote Uncle Ben from "Spider-Man," saying, "With great power comes great responsibility," reports Hallels.

Earlier this summer, Greenwalt talked about a new evil Wesen that will be introduced on the show in the first couple of episodes who "steals your identity but in a very disgusting way," reports the Los Angeles Times' Hero Complex.

According to TV Guide, a character named Gedächtnis Esser, aka Octo-Man, can steal someone's memories by attaching his tentacles to their head, leaving his victims either dead or with severe memory loss.

"This guy is ruthless and sophisticated -- a high-tech spy who is involved with some highly placed military intelligence personnel," Greenwalt told TV Guide.

In addition to Octo-Man's many victims, he will also target Trubel, the new feisty Grimm in town, which "will leave her in a very dire state," said Greenwalt.

Season 4 of "Grimm" premieres on NBC on Oct. 24 at 9 p.m. ET.