Noah and Rosalee will run away in the upcoming fourth episode of WGN America’s latest highly acclaimed drama, “Underground.”

The Macons will find out about it and will enlist August Pullman to help find the two, Broadway World wrote.

Elsewhere, Ernestine will try to cope with the absence of her daughter, while others will discuss whether they should run as well. Cato, on the other hand, will enact a daring plan that will have immediate effect on the plantation, while Pearly Mae will make an extremely difficult decision.

John and Elizabeth Hawkes, meanwhile, will come face-to-face with Josey in a confrontation. The role Josey will be played by “Empire” star Jussie Smollett. The character is a wild-eyed runaway in the upcoming episode, “Firefly,” which is set to air on Wednesday (March 30) at 10:00 p.m. (ET/PT) on WGN America.

Watch “Underground” season 1 episode 4 trailer below

According to Broadway World, this will mark the first time in 20 years that Smollett will appear in the same show as his younger sister Jurnee Smollett-Bell (Rosalee).

“Underground” is the latest period drama in television that centers on the live of a group of slaves running for their freedom. The show was created by Misha Green (“Sons Of Anarchy” and “Heroes”) and Joe Pokaski (“Daredevil” and “Heroes). Series executive producers are: Academy Award-winner Akiva Goldsman (“A Beautiful Mind,” “I Am Legend”), Joby Harold (“King Arthur,” “Edge of Tomorrow”), Tory Tunnell (“King Arthur,” “Holy Rollers”), and singer John Legend.

“Underground” was the much-talked about show on social media when it premiered last March 9 and has been the second-highest trending topic of Wednesday, behind only the Democratic debate on CNN and Univision, Variety reported.

According to Variety, the critically acclaimed hit series scored 3.5 million total viewers and 1.5 million adults 25-54, making it the highest-rated original scripted program ever in WGN’s history.

Meanwhile, fans may also catch “Underground” marathon of its first three episodes on Tuesday (Mar 28) starting at 8:00 p.m. (ET/PT) on WGN America.