Nah, the episodes are standalone. New teams are also introduced pretty often, and only some of them have something akin to an arch. There are also huge differences between the episodes of each team, with some having more of a comedy approach, some being thrillers and some being action films (like the Till Schweiger ones back in the day), and depending of the popularity of each team / city, the ratings are different (the one in question was from Dresden, which is on the air since 2016 with now 14 episodes).