On Brick Street has a number of running threads, involving different sets of characters.
Each of those threads has a running theme; a location or situation that differentiates it from the other themes.
Below is a list (which is by no means limiting) of the themes that we have seen so far...

 

Metaworld theme These are the lives of the everyday self-aware minifig...  (Present-day)
Trolling the 'Net theme Trolls. On the internet. Who'd've thought?  (Present-day)
Life On Brick Street theme Follow the dark bley brick road…  (Present-day)