Joshua and Margaret Investigations

Synopsis
Finn and Jake's parents hunt an unearthly menace in the woods.

Plot
The episode opens up on the treehouse with Finn, Jake and BMO are celebrating Jake's birthday. While Finn and BMO chant "Happy Birthday," Jake gobbles his birthday cake. Finn mentions to Jake how he's a year older but still looks good, Jake replies saying that it's because of "Mom and Dad" passing down good genes. Finn begins to remember Mom and Dad, which leads to him and BMO asking Jake to tell a story about his parents, or a "Birthday story.". Jake then began to tell his story.

The scene changes into a flashback when Margaret was still pregnant with Jermaine. Margaret told Joshua to check for new cases. Joshua rejected at first but he was convinced by Margaret that she can take it. Joshua suddenly finds a case of a 'Woman's pies going missing'. They went to Tree Trunk's House to take the case until they found Wyatt climbing over the window, it was revealed that Wyatt ate the pies and planted false footprints. Joshua and Margaret decided to leave but Tree Trunks reported that there's still a real monster nearby due to her getting rubbed on her elbow. They decided to investigate the scene, until they found the footprints of the real monster. They followed the footprints into the tracks and suddenly a blue cat pounces out of a bush. The monster bitted Joshua and he got poisoned.

Back in their house, Margaret tried to find an antidote for the poison on the Book of Poisons. The book stated that she needs to get the venom of the creature to create the antidote, and thus she went outside. The scene changes into the forest, Margaret followed the trail the creature left behind and she found herself on the creature's lair. Looking for the creature, she instead found a baby creature which she punched to get it's venom out. Margaret leaves the lair but suddenly the creature shape-shifted and went to a blue-ish portal. Back in the house, she founds the home wrecked. Margaret went to the kitchen to find the window opened and Joshua outside. Margaret found Joshua's head seemingly having a bump, suddenly Margaret went into labor with Joshua's head going to release something. After a loud yelp, they heard a loud splat noise and they shined the light on it. Joshua gave birth to Puppy Jake, Puppy Jake then sang and danced before falling back to sleep. Suddenly Margaret's belly was moving a lot. The screen changes into a forest while Joshua is pushing a stroller with Jermaine and Puppy Jake inside it. Discussing about what Jake really is and if he's a harmful creature, they decided that Jake is really their son and to never tell Jake of how he was born.

The scene changes back into the present in the Treehouse, Jake then said 'And so they never told me.' Finn was confused on what wasn't told, but Jake didn't know about it neither since they never told him.

Major characters

 * Joshua
 * Margaret
 * Poisonous Creature

Minor characters

 * Finn
 * Jake
 * Jermaine
 * Snail
 * Tree Trunks
 * BMO
 * Wyatt
 * Kee-Oth (pictured)

Mentioned

 * Marceline
 * Lieutenant Candy Corn
 * Flame Princess

Trivia

 * This episode was announced during the 2014 San Diego Comic Con along with a sneak preview of the episode.
 * This is the longest episode name of the series, second being "Thanks for the Crabapples, Giuseppe," an episode airing on the same season. Third being "The Prince Who Wanted Everything."
 * It is revealed that Jake's existence was a complete accident and that he is not biologically related to his mother.
 * This episode also explains that Jake got his stretching powers from being half shape-shifting creature, proving that Jake was wrong about getting his powers from rolling around in the mud and that he is actually a hybrid between a dog and the shape-shifting creature.
 * It also explains why Joshua always wears a hat.
 * The Poisonous Creature's mouth vaguely resembles Jake Jr's mouth, meaning that some parts of the creature were carried on to Jake Jr.
 * Tree Trunks uses the regional pronunciation "Leftenant" when referring to Lieutenant Candy Corn.

Cultural references

 * The book Margaret was reading about the antidote is named 'Book of Poisons' and a long text on both pages can be seen. Among this texts:
 * It states 'according to the WHO'. In modern day, the WHO is the short form of the, the specialized agency of the United Nations dealing with public health.
 * It also states ", one character in an story," which refers to an actual historic person and an actual author in modern day.
 * Furthermore, Cleopatra committed suicide by having a poisonous Egyptian cobra bite her.
 * The spine of the book sported a skull and crossbones, which symbolizes poison, among other things.
 * While Jake being born of his father Joshua is similar to the birth of the creature from the 1979 movie ', him immediately singing and dancing after birth is exactly like the parody situation in the 1987 comedy '. In both the original and the parody, John Hurt portrayed the "father" of the creature.
 * In Margaret's weapon room, a Pokéball from the series can seen on the right side.

Episode Connections

 * This episode reveals the origin of Jake and his stretching powers, which had been hinted at an unknown even to Jake; prior to this episode he had thought in "The Witch's Garden" that he had gained them from rolling in a magic mud puddle as a puppy. It likewise reveals the connection he has to his brother Jermaine, who is technically his brother but "younger" due to being born mere moments after Jake as first noted in "Crystals Have Power."
 * At the time this episode is taking place Tree Trunks is married to Wyatt who is first seen in "Apple Wedding."
 * The background of Flame Princess in "Earth & Water" was also mentioned, though she was called "fire goblin" again, similar to in "Hot to the Touch."
 * Joshua says "small fire goblin" as when Flame Princess was little.
 * The Demon Blood Sword can be seen on the left side of Margaret's weapon room.
 * If Joshua did not start wearing his hat until after giving birth to Jake, then this would contradict the order of events since he was wearing his hat when he tricked Kee-Oth into creating the Demon Blood Sword. It is possible that Joshua owned the hat beforehand, or that the sword is made from another demon's blood.
 * Margaret shoots a poster of Kee-Oth with a crossbow.
 * In "Beautopia", when Susan tries to explain what a "lub glub" is, she draws a picture that vaguely resembles the creature when it was creating it's portal. Jake responded saying that it looked like his father and later saying the same thing about his mother. This could be a reference or just a coincidence.