SPOILERS: the whole thing is very bleak, its about finn and Jake being dead, yet they managed to give it a happy ending, finn and Jake end up reincarnating together
tree trunks, both of her current husbands, and all of her ex husbands live together in the dead world and the men hate each other. i really feel like this counts
the whole movie is about finn and Jake being dead, and in the dead world. they come back as ghosts at one point, peppermint butler communicates with them via ouja board