So the January 6 Capitol siege guys are killing people that spot them on the internet, which sounds like pretty dumb plotline, since that could be dozens or hundreds of people.
A girl whose Father was injured spots one of the bad guys at the hotel she works in. She drops an anonymous tip to the FBI. The FBI clerk that takes the tip calls the bad guys because she feels they are unjustly accused. That seems even more unlikely. Thanks to her, they track down the tipster and kill her. The FBI gets involved to track down the killers.
By coincidence, it turns out the same bad guys are stealing guns from the National Guard where some of them work, for a major attack on something vague. The two main villains are two brothers, and one brother is screwing the wife of the other brother. That is where most of the story is focused, not on any actual terrorism.
Besides drinking beer in an abandoned factory, the villains do not seem to have any plan. The main concern of Brother #2 and Wife of Brother #1 is not to get caught screwing aorund. It is a pretty pointless story with a very lame ending.