TL:DW: Boring movie about self-help group of untalented people
.. living in the squat, that are trying hard to do "improvised comedy art" and constantly struggling, because of their high expectations and inability do judge the value of their own work, objectively (in other words - their stuff is cringeworthy at best). That pretty much sums it up.
If you like to waste your time, watching talentless people fail all the time at being funny - you are gonna be satisfied. If not - don't waste your time.