Chaos on Deponia (unfortunately) still follows Rufus - my most hated main character in any game series - treading unnecessary grounds between the series' first and third instalment. The plot this time around is more or less exactly the same as in Deponia: Rufus attempts to get to Elysium, hurts Goal in the process, saves Goal, then they both arrive at some sort of 'emotional finale'. The only actual tie-in with the overall story is the ridiculously unlikely romance between the two leads. There was plenty of opportunities to allow for some character development to take place here, but the developers must have thought Rufus is perfect the way he is. I doubt I am alone in thinking otherwise.
The comedy found within is more miss than hit, usually revolving around racial and gender stereotypes, slapstick, and Rufus' narcissism. Characters you meet are one-dimensional walking punchlines, only they lack actual punchlines. Often, Rufus will be painted in a good light while characters opposing him - specifically women - are seen as ♥♥♥♥♥y obstructions in a great man's journey. When that fails, crude humour comes into play in the form of dead baby animals and belittling of others. I picture the developers staring longingly through the windows of residence Monkey Island, soaking in the rain while contemplating ringing the door bell and asking for worthwhile ideas. A shame they instead resorted to the trash bin.
That being said, if you are a fan of point-and-click games, you should definitely consider giving it a shot. The gameplay is good fun, the art is gorgeous, and the English voice actors usually play their roles very well. The enjoyable musical numbers separating chapters are still present, but it's now even more painfully obvious they struggled to fit the lyrics to the songs. Sadly, all of this is not enough to warrant anything other than a red thumb.
In summary: If you find it appealing to control the bane of human existence sort of bumble from one mildly logical puzzle to the next while listening to him comment on his surrounds with punchable smugness for 8-9 hours, then by all means give this a try. I can promise if you did not like the first game, you won't find anything here to make you want to see trilogy's inevitable end.