After winning splatfest and a night of celebration, meggy discovers that she has grown strong feelings for her longtime friend, Mario. At first, she thought it was a little crush and nothing else. A moment of passion that would pass; however, she soon learns that her feelings are stronger than anything she's felt for another. She goes on a journey to see if their relationship will develop into something more.

What happens when Mario, our loveable red plumber who's been there since the very beginning, gets beat up this time? You don't know? Why, I think it's time I show you.

Mario and Luigi walk through the Mushroom Kingdom when they suddenly have weird farts. They think it's nothing until Princess Peach reveals everyone in the Mushroom Kingdom is farting rapidly. King Toadstool reveals someone has poisoned the Mushrooms, resulting in a "fart curse." Even worse, Yoshi, the only one immune to the curse, is kidnapped by Bowser to find a cure. Mario and Luigi set off to save Yoshi, make a cure for the curse, and find the mysterious enemy responsible, while he secretly plans to make sure Mario fails when the curse enters Stage 2 of symptoms: Demons. But in episode 10 yoshi had died and so did dingo in episode 2 and david is killed by farting too much in episode 7 so in episode 11 mario and all of his friends made an army to beat bowser by using all yoshi's bros and sisters