WARNING: This article contains spoilers for Agents of SHIELD season 6 episode 4. Read at your own risk.

Agents of SHIELD season 6 episode 4 is coming up later this week, and there are good and bad news here. So, here's what to expect in the upcoming episode titled "Code Yellow."

The good news in this episode is that Deke is back, and it's nice to have him at this point, especially he gives different energy than anyone else. He is excited and happy to see Sarge as he initially thought he was Phil Coulson. However, he would learn later on that Sarge is a man who has a particular agenda - specifically in continuing a quest that he's been for a very long time.

He is after Deke and will try to get rid of him, but the latter needs to figure out how to bolt soon before Sarge can harm him. Perhaps, the intriguing question here is that, who is Sarge? The series does not reveal much detail about the character, and he speaks differently from everyone else.

But, it is very likely that this season would further explore more about him. Also, many also like to see Sarge having his spotlight in an episode, especially in exploring his backstory so that viewers would understand all of his collective ins and outs.

Meanwhile, in another part of Agents of SHIELD season 6 episode 4, Keller and Yo-Yo will be going to take things public, which might not be a good idea at all. The parasitic aliens will also threaten the human race.

The surprising thing about this show is how little it gives away and how comedic the series starting from its synopses. The show isn't giving too much information so that viewers get intrigued about what will happen next.

Also, the series is doing a good job and being consistent in terms of ratings. The first two episodes generated a 0.4 in the 18-49 demographic, although those aren't that great, at least, the show had managed to be consistent with what it had for the season 6 finale.

Agents of SHIELD season 6 episode 4 will air on Friday, May 31, on ABC. The series is also available in the ABC app and website, and it can also be watched on different online services such as Roku, Hulu, and Sling. Viewers can stream the ABC channel here to watch the show at the mentioned time.