Fans of "Chicago Fire" will get to see another heart-warming battle and new drama in its upcoming episode.

In "Chicago Fire" season 5, episode 8 titled "One Hundred," Lt. Mathew Casey and Gabriel Dawson will plan on adopting Louie but will later on find out that making that decision is not that easy after all, especially because of a major setback that will get them thrown off their path. While fans have yet to know what particular setback that is, it looks like it is going to be something that is pretty serious.

Viewers will also see things spiral out of control in episode 8 with the introduction of a guest character named Lieutenant Jeff Clarke, who is described as a former firefighter who is currently studying to be a doctor. Based on the synopsis for the episode, this new character will try to lure Lieutenant Kelly Severide with an irresistible proposal, possibly causing an unexpected plot twist at some point in the episode.

Meanwhile, Otis will be very excited about his new bar business. He will ask Hermann to throw a big party to celebrate the 100^thanniversary of Molly's, but things will reportedly turn sour during the party.

Some spoilers for episode 8 suggest that the upcoming episode will be commemorative of the run of the series on television, since it marks "Chicago Fire's" 100^th. Because of that, fans expect it to be packed with lots of action, especially for Dawson and Casey.

"Chicago Fire" season 5, episode 8 airs on Dec. 6 on NBC.