This game is set in a fantastical alternate world with animate skeletons and talking pigs.
Supernatural trolleys and trolley lines connect different parts of the world together, and you are a harpooner on one such trolley.
Your task is to be confronted with several situations where the good of one is pitted against the good of many and you have to make a choice. This is the classical trolley problem, and also, in this game, a literal trolley problem as you decide who to run over.
There is also a side mystery uncovered by Club Floyd but which I was not aware of.