SMG4: Little Penguin Lost is the forty-sixth episode of Season 9 and the five hundred and forty-eighth overall to be uploaded by SMG4.
This episode was aired on December 14, 2019.
Mario drops a baby penguin off a cliff for the 10th time
The episode starts with Mario and Meggy going to GameStop to buy Super Woomy Adventures, but due to the holiday season, the store was closed. Mario attempted to break in but failed. When Meggy told him to leave, Mario agreed, on the condition that Meggy dragged him home, to which Meggy abandoned him. Mario ran to Meggy but ended up tripping on a baby penguin named Tuxie. Upon seeing it, Meggy suggested they brought it back, but Mario instead knocked it off a cliff, much to Meggy's dismay. Mario however, told her that he did it numerous times in the past and that Tuxie would be fine. A Mother Penguin saw this, but instead of attacking, took Meggy away, mistaking her for her child, as well as knocking Mario off the cliff after he made fun of the penguin.
Meggy was stuffed in a penguin suit, and began to like the penguin experience after being offered McDonald's food, but became horrified upon learning she had to eat it like a bird. Mario attempted to get Meggy back by throwing Tuxie in the house and telling the mother that Tuxie was her real son, but the mother threw Tuxie back out the window. Then, Mario knocked on the door, to which, when opened, casually asked to steal the mother's child. The mother realized that he was not the usual guy who steals her child but Mario rushed in to escape with Meggy. The two came across a giant slope, which Mario rode, using Meggy as a snowboard. They used a Mr. Blizzard to make a huge snowball, which flew into the air via a ramp, thereby finally getting away from the mother.
Upon landing, Meggy was released from the suit, only for her and Mario to end up on a lake, complete with thin ice. Among the failed attempts by Mario to just go for it, Meggy found that the solution was sliding to land. Meggy and Mario then found Tuxie, only for the penguin to be revealed as an antagonist, as he stranded the two on a piece of ice with a tiny tip of a hammer. Meggy found that Mario's phone still had a signal, but had only 1% left. However, instead of calling for help, Mario ordered pizza so that way, they won't starve. Meggy, furious at Mario's stupidity, just sat with her arms folded.
Later that night, Mario and Meggy started to think that it was the end of the two. Just then, the delivery guy, Spider-Man, was seen on a jet ski, delivering the long-awaited pizza. Spider-Man then noticed Tuxie and called the cops on him, to which the penguin jumped into the water. Mario launched Meggy on her command into the water, to which the icy perimeter launched Tuxie straight at the cops. At this point, he was arrested. Spider-Man explained that Tuxie was the subject of several disappearances and that he was grateful for their help.
When Spider-Man left, Meggy realized that she and Mario were still stranded, to which Mario eased the mood with the pizza Spider-Man brought, concluding the episode on a somewhat happy note.