As the story opens, the protagonist lives a happy and carefree life before tripping over a rock one day and being bitten and stung by various creatures.
The journey itself is beset by many more troubles, including a draft animal that falls sick, a bus that breaks down, a flood, and a general who conscripts the protagonist into his army.
Escaping into a dark tunnel, the protagonist suffers numerous further mishaps before finally reaching an exit door that opens near Solla Sollew.
The doorman apologizes that he cannot open it, because a Key-Slapping Slippard recently nested in the key hole, meaning that the single trouble with the trouble-free city is that you cannot get in.
In Seussical, Solla Sollew is the subject of a song in which the main characters yearn for a happy resolution to their problems.