Diamonds and Lemons

 is a bonus episode of Adventure Time, which aired between the season 9 episodes "Gumbaldia" and the series finale "Come Along With Me." It is the two hundred seventy-ninth episode overall.

Synopsis
Finn and his friends experience setbacks and creative triumphs in a fantastic new vision of Ooo.

Plot
The episode starts off with Finn fighting against numerous zombies and spiders while retrieving a bucket. After several of his tools break, he runs off to the treehouse as the sun rises. On the way, he passes by Lemongrab 3 who is attempting to plant a lemon in the ground. When he gets back to the treehouse he hops in a minecart and rides underground to where Jake is mining for Diamonds. Jake asks for help in digging for diamonds after Finn give some him the water, to which Finn agrees. After they amass a large pile of diamonds, they walk over to lava, as Jake begins to through in diamonds. Finn is outraged, calling it a waste, and says he is going to make something special out of one of the diamonds.

The camera cuts to Lumpy Space Princess, Ice King, Gunter, and Ancient Sleeping Magi of Life Giving are meeting, bragging about griefing houses. Ice King suggest griefing Finn and Jake, but LSP is mad because he has never griefed before, and tells him to grief soon or he will be kicked out of the club.

Finn goes to seek out someone to help with his diamond, and as he passes by Lemongrab, he gifts him a shovel to help plant the lemon. Lemongrab digs a hole, puts the lemon in it, and gets frustrated when nothing happens. Finn goes to where Marceline is summoning skeletons to build a windmill, and he asks if she knows how to blow away Jake with a diamond. She suggests building a windmill out of diamonds, but Princess Bubblegum takes the diamond and makes a firework, which he takes. PB and Marceline give Lemongrab some saplings and bonemeal to help him.

Finn goes to Tree Trunks and Mr. Pig’s house where they are playing cards, and he asks for an Apple pie. Tree Trunks is out, but gives him a pumpkin pie as a substitute. Finn rides on Mr. Pig with a carrot on a stick, but runs into an Enderman on the way home. Mr. Pig runs away, but Finn is stuck staring at it’s feet so as not to get attacked. As a day passes, the Enderman still has not left, and Finn is getting very tired. LSP is sleeping under a shack nearby, and as she wakes up she complains to Finn loudly, which causes the Enderman to finally leave. Ice King comes to take a pumpkin out of Finns backpack, but gets scared by the Enderman, who chases him as he puts th pumpkin on his head.

Lemongrab wakes up to discover that his lemon tree has grown, but as he reaches up to pick one, he discovers they are actually apples. As he collapses in defeat, Tree Trunks comes by to pick the apples. We cut back to Finn, who is showing Jake the things he has gotten on his journey as he launches the firework at the roof of the cave. Having judged Jake for throwing all the diamonds away Finn comes up with a philosophic conclusion about the topic of hard work and how the beauty lies in the action itself which drives us to repeat actions to capture this beauty over and over again.

Major Characters

 * Finn
 * Lemongrab

Minor Characters

 * Jake
 * Marceline
 * Princess Bubblegum
 * Lumpy Space Princess
 * Ice King
 * Gunter
 * Ancient Sleeping Magi of Life Giving
 * Gumball Guardian
 * Tree Trunks
 * Mr. Pig
 * Peppermint Butler
 * Enderman
 * Snow Golem
 * Snail (shortly in Tree Trunks's house, next to Finn)

Cultural references

 * The episode is a promotion for the sandbox survival videogame Minecraft.

Storyline analysis
As a Bonus Episode the plot here doesn't quite relate to the rest of the story. In the last episode everyone was preparing for the upcoming GumWar, but here everyone just seems to be doing what they want and taking their time in doing so. Finn just fought monsters, helped Jake mine diamonds, visited Tree Trunks, Marceline and PB and then spend a long time staring at the Enderman's feet, which all just indicate that he was neither in a rush nor had he anything else important to do at the time. Of course Marceline and PB wouldn't be building a windmill if there was an upcoming war in as well. Also they find enough time and resources to help Lemon Grab with planting his Lemon tree which of course in the Mine Craft world that it plays in ended up as an apple tree.

In the last scene of the episode Finn comes up with the moral conclusion of why Jake seemed to waste the precious diamonds. Even though the hard work was barely shown one could realize how hard it must have been to harvest that many diamonds which adds an extra humourous effect on Jake playing around with them and throwing them in the lava. By means of the fancy but incomplete circle that Jake made by kicking diamonds around, Jake's child like approach of spending the outcome of work on having fun and enjoyment. The shape that he created was almost fully symmetric and complete, but he soon lost interest, just like we know him, in doing that and instead fulfils Finn's words, by taking the fruits of their labour and turning them into something beautiful and unexpected. Of course he stretches his leg while Finn is still talking but the moment that he says unexpected Jake pushes the diamonds into the lava.

Production notes

 * This is considered bonus episode as it not apart of any season. It aired between the season 9 episodes, "Gumbaldia" and the series finale "Come Along With Me" but was produced separately from the main Season 9 order, and is non-canon, separate from the main storyline.

Errors

 * In the game Minecraft, Enderman are hurt by water, but the one in the episode stands in rain with no issues