Eric Slater

Kidd and Severide's honeymoon is interrupted by a dangerous person from their past. Kidd's former academy classmate joins Firehouse 51. Brett and Violet reflect on their relationships.

All seems lost with firehouse 51 on the verge of closing its' doors, thanks in no small part to Gail McLeod (guest star Michelle Forbes), but Chief Boden (Eamonn Walker) and the rest of the house refuse to allow themselves to sit by and let it happen. An emergency call to an apartment structure fire tests everyone's limits and puts the squad in harm's way. Meanwhile, Dawson (Monica Raymund) receives some life-changing news and union president Greg Sullivan (guest star Eric Slater) makes headlines, which has an immediate impact on Mouch (Christian Stolte).

While out on a jog, Severide (Taylor Kinney) comes across a secluded and empty construction site and encounters a young boy who has been trapped in a backhoe loader and is in dire need of assistance. Boden (Eamonn Walker) and McLeod (Michelle Forbes) continue to butt heads about the future of the firehouse and Boden breaks news about his future to Casey (Jesse Spencer). Meanwhile, it's election day for the union presidency and Mouch (Christian Stolte) and Greg Sullivan (guest star Eric Slater) have a debate on Otis' (Yuri Sardarov) podcast. With rival bar Game Day's future in peril, the finger is being pointed at Molly's.

When the shooting of a young girl happens in their neighborhood, Cruz (Joe Minoso) and his brother, Leon (guest star Jeff Lima) are forced to think about the gang they have tried to escape. The battle between Chief Boden (Eamonn Walker) and McLeod (guest star Michelle Forbes) continues to escalate and Isabella (guest star Mena Suvari) convinces Mills (Charlie Barnett) to dress up for a fancy gala. Meanwhile, Lt. Casey (Jesse Spencer) is sad Dawson (Monica Raymund) won't be coming by as much now that his parental duties are over, Shay (Lauren German) is fed up with the firehouse and digs in deeper with Devon (guest star Vedette Lim) and Zoya's (guest star Larisa Polonsky) visa is expiring, prompting her to come up with an idea.