SMG4: There's Something Up With Meggy... is the twenty-fifth episode of Season 9 and the five hundred and eighth overall to be uploaded by SMG4.
This episode was aired on July 6, 2019.
Luigi notices that something is wrong with Meggy and tries to figure out what it could be.
In Peach's Castle. Luigi is watching Garfield dancing on TV, but goes outside after hearing drilling; he sees Meggy building a treehouse, the latter, however, is still upset of the events of The Anime Arc. Luigi then reminds her that she should be training for Splatfest, but this causes Meggy to remember Desti's last words, and when Luigi asks Meggy if she's feeling okay, she instead aggressively throws him out of the treehouse and starts to work on it crazily.
Luigi then brings his brother to try and solve the situation, only for him to wreck the treehouse; this causes Meggy to go insane and chase them into the castle.
Mario attempts to calm Meggy down by being friendly, only for him to be abducted by her. Horrified, Luigi runs up the stairs and stumbles upon Tari playing video games. Meggy soon finds them, but when she sees Archibald (Tari's rubber duck), she becomes obsessed with it and pesters Tari to buy it from her, even resorting to use the castle's funds and living people, further pushing her into madness.
Mario, Luigi, and Tari find out that she was acting like that because of Desti's death, which results in a flashback from Mario as he was getting impatient since Meggy was trying to buy new clothes and noticed a sweater with the same design Desti wore. When they attempt to calm Meggy down, the latter snaps out of her insanity and starts to weep, saying that she really misses Desti, and runs off.
The scene cuts to Meggy's house, where Mario, Luigi, and Tari arrive to find a weeping Meggy and attempt to comfort her, saying that winning Splatfest was Desti's dying wish. This works at bringing back Meggy to her senses. However, she immediately dragged them off to train, even though Mario yelled that Splatfest is ages away.
- SMG4: If Mario Was In... Splatoon 2: Meggy has a flashback of Desti
- SMG4: World War Mario: Meggy still suffers from PTSD and developed a fear of octopi ever since the death of Desti during the Battle of Anime Island. It was also stated to be one month since Desti's death.
- World War Mario took place on June 6, 2019 and this episode aired on July 6, 2019 which actually makes it exactly one month since Desti's death.
- SMG4: Final Hours: Meggy's appearance has changed drastically, as a result of the events from that episode.
- Meggy attacks Mario at the second-floor entrance, but in the next scene, he appears descending the stairs from the fourth to the third floor.
- When Tari plays with Archibald, she asks him if he would like to play a game with her, and Archibald then "answers" (with Tari's words): "Why yes I would, thank you young man" (despite Tari being female). This could be due to Tari pretending Archibald to be a male.
- Luigi and Meggy mention that Desti sacrificed her life to save everyone's lives in SMG4: World War Mario, but in reality, it was false, since she was just kidnapped by Godzilla and was ambushed by the False Sephiroth, stabbing her in back.
- When Mario, Luigi, and Tari find out Desti's death was exactly a month ago, the coins in the background suddenly disappeared. Then in the scene after Meggy weeps and exits the castle, the coins suddenly appear again.
- The first episode post-The Anime Arc to directly address the aftermath of the story arc, namely Meggy's immense grieving over Desti's death, and Mario, Luigi, and Tari's attempts to help her through it.
- This is the final blooper that was mainly edited by Luke Lerdwichagul in a row. Afterwards, other people would do the editing for him, although he did edit a few episodes after this one, those being SMG4: Smart Mario, SMG4: War Of The Fat Italians 2019, and SMG4 Movie: Meggy's Destiny.
- This is the first time Meggy went mentally insane.
- This is the first time Meggy's current appearance appears as a GMOD playermodel.
- In Meggy's house, there is a silver model of Pac-Man.
- This is the second time Meggy plays a villainous role, the first was in SMG4: Mad Mario where she is the leader of a biker gang.
- This is also the first time where she is the main antagonist.
- Tari is revealed to find games like Dark Souls 3 relaxing (a series are known for its high difficulty).
- This is the second time that Mario is seen in a wheelchair. The first was in SMG4: Stupid Mario Tennis Aces.
- Meggy goes through the five stages of grief.
- Denial is when she pretends that everything is normal by building a treehouse.
- Anger is when she tries to attack Mario and Luigi in a rampage.
- Bargaining is when Meggy becomes infatuated with Archibald and desires him.
- Depression is what she falls into when she recalls what happened to Desti.
- Acceptance is when she decides to train for the Splatfest.
- This is also the sixth episode where Meggy swears.
- Orphan: This episode is reference to this film and its tagline "There's Something Wrong With Esther".
- The Shining: The catchphrase "Here's Woomy!" as Meggy said after broke the castle door and about to attack Mario and Luigi is a reference to the film's main antagonist Jack Torrance.
- The Five Stages of Grief: The episode is based on this meme that was spreading across Reddit, which the episode contains the "Kübler-Ross model", which Meggy is affected by it, which it is the "DABDA (denial, anger, bargaining, depression, and acceptance)". In short, the episode is built around it.