Women love Severide (Taylor Kinney) for his tough, no nonsense personality, but they will find themselves melting when they see the firefighter acting silly to entertain a kid in the upcoming episode of "Chicago Fire."

In "I Will Be Walking," TV Guide reports that lieutenant will offer to babysit Holloway's (guest star Jenny Mollen) son. The detective will be going undercover for a dangerous operation and there is no one who will watch over her kid. Severide will volunteer to keep the boy entertained while awaiting his mother's return. As a bachelor, this will be one of the toughest jobs for him, as he does not know a thing about child care. Will he be okay?

Elsewhere, Casey (Jesse Spencer) will come across his first difficult task as alderman. In the promo, a bloody teenager is seen tied to a post near the train station. Investigation reveals that the high school student is an innocent victim in a gang war. Casey will reportedly do his best to stop the nonsense rivalry, but it will not be as easy as he thinks. The clip shows that he will be using his political influence to make a risky deal. Casey will have to be very careful, as his own life will be in danger.

Meanwhile, the rest of the Firehouse 51 members will be busy doing their own thing. Jimmy (Steven R. McQueen) will find himself the object of adoration of a woman he saved with Brett's (Kara Killmer) help. Herrmann (David Eigenberg) will have to prove that he is better than Stella (guest star Miranda Rae Mayo) in running the bar. Otis (Yuri Sardarov), on the other hand, will discover something that will rattle him. What could it be?

"Chicago Fire" season 4 episode 19 will air on Tuesday, April 19 at 10 p.m. EDT on NBC.