The Summer Special starts with Finn and Jake lost in the desert with Jake believing Finn is reading the map wrong, but Finn claims otherwise and so points the right direction and Jake slings him in the direction of a cave, where a Troll Guardian is standing outside. They realize it’s the right place, but they can’t pay the toll so are turned away. They decide to put up a lemonade stand for travelers to raise money, but their lemonade was not of a cool temperature and so money was returned soon after raising it. The Ice King shows up asking for lemonade, but Finn and Jake refuse to sell to him and in anger the Ice King freezes the stand for being denied the lemonade, which then Finn realizes their efforts have been turned into icy pops, ending up with them selling and so don’t even need the treasure for cashing in with the pops they sold. The next story starts with Jake frying some eggs and singing a song about it. Then he sees a pigeon near him, which Finn explains he found in an unlikely spot in his unmentionables. Jake asks why he’s holding the bird with tongs which is explained with the facts of the creature possibly being diseased. Finn figured the bird could stay a couple days, roommate-style, since the little guy wouldn’t leave.
After a couple of weeks, some of their articles have been going missing, Finn not having his pants handy and Jake bereft of his teapot. They they see the bird is using their belongings as bathing material and isn’t helping around the house either, which spurs Finn into deciding the bird should go. The bird then speaks, to their surprise, but turns into something un-bird-like, at the same time. Jake figures out the creatures origin and Finn begins fighting it, but Jake informs him the only way to beat it is through a voting system, which the creature had to obey, getting him to leave. This was also a good mini-story. The next one starts with Marceline reading and notices PB walking by. Curious, she follows her not making herself known. She follows PB to a crystal-heart tree hidden through a cave, for an experiment. PB tries to snap one off, but in her efforts, Marceline gets some entertainment from her failure.
PB then sleeps over for another try later. Whilst she sleeps, Marceline successfully gets one of the tree limbs broken off and leaves it next to her, then leaving, her job complete. Which was a sweet one in its simplicity. The next story is a Fionna and Cake mini, starting with Fionna kicking debris off of the dirty yard as Mr. Stumps complains about its mess. Cake claims she can clean it up and proceeds to eat the mess up, with Mr. Stumps in agreement to it’s cleanliness afterwards, awarding them some cash. Fionna plans on using the money to attend a Heroes and Adventurers Caucus for souvenirs, but then the money bursts into flames. She runs quickly to get her ticket, but then is shown a sign which excludes her from attending, this doesn’t stop her from trying though and so disguises herself into looking like Finn; I won’t even go into the ending, but it was cute as Bonkers. I’ll be happy to start the Fionna and Cake series.