For those not familiar with the characters, the show is set in the city of Freeland, which is a majority-black city that is struggling with gang violence from a gang called The 100, which is headed by a former corrupt politician named Tobias Whale, who has powers of his own. Jefferson Pierce (played by Cress Williams) is a former Olympic athlete and is now the principal at Freeland High School. His oldest daughter, Anissa (played by Nafessa Williams), is a medical student, part-time teacher, and social activist. She is also the superhero known as Thunder, possessing invulnerability and super strength for as long as she can hold her breath. Jefferson's youngest daughter, Jennifer (played by China Anne McClain), inherited a version of Jefferson's powers. Lynn (played by Christine Adams), Jefferson's ex-wife, is an expert in metahuman medicine. They are joined by Jefferson's version of Alfred, named Gambi (played by James Remar), who helps Black Lightning and Thunder fight crime in the city.
The show definitely has a different feel from the other superhero shows on the CW, and it is the only one that is not directly tied in with the other shows like Arrow, Flash, and Supergirl. That is primarily because those shows are filmed in Vancouver, while Black Lightning is filmed in Atlanta. Supergirl was named dropped in Season One of Black Lightning, so it is tied into the Arrowverse tangentially, but we don't know if it is set on Earth 38 or one of the other Earth's that was established in the multiverse. Each of the episodes is titled "Book of ____________," and each book has individual chapters. Each time the storyline shifts to a new main focus, the book title changes. The season ends on a cliffhanger of a looming threat to Freeland that sets up at least a part of the storyline of season three.
The show also has a political bent (while not referencing any real politicians), playing off of real-world themes like the Black Lives Matter protests, the rash of white people calling the police on black people that happen to be nearby, as even plays off things like the Tuskegee experiments. That said, it has a very diverse mix of characters; some good guys are white, some bad guys are black, and it is much more nuanced than just one group is good, and one group is bad.
The Blu-Ray set is a three-disc MOD set. The episodes are spread over the three discs, and unlike most MOD sets, this includes a couple of extras. One is a featurette on the character of Tobias, and one is a cheesy featurette about filming the series in Georgia. There are no commentary tracks, cast interviews, or the like. Overall, if you liked season one of the show, you will probably like the second season. I cannot say that everyone who is a fan of the other Arrowverse shows will automatically like Black Lightning, especially if you love that the other shows are more closely tied together. But if you are a fan of superhero shows, it is definitely worth checking out.