The Smurfs Meet the Mario Bros.

Gargamel's Attack
It was just another Smurfy day in the Smurf Village. The Smurfs are doing their normal things, until Papa Smurf sees Gargamel and Azrael attacking the village. He warns the Smurfs, and they run away. Gargamel and Azrael gain on them, but the Smurfs jump into a "tunnel" (later known as a warp pipe).

Welcome to the Mushroom Kingdom
As soon as the Smurfs step into the light again, they realize that they're someplace else - the Mushroom Kingdom. Then, the Doomship appears, and Brainy wants to read a boring book to find out what it is, but the others stuff Brainy in a boring book. Then, Gargamel and Azrael meet up with the Koopa Family: Bowser, Bowser Jr, Ludwig, Lemmy, Roy, Iggy, Wendy, Morton, and Larry. Then, the Smurfs meet up with Mario, Luigi, Princess Peach, Toad, and Yoshi.

Capture
Gargamel, Azrael, and the Koopas "smurfnap" the Smurfs, Mario, Luigi, Peach, Toad, Yoshi, and the Pac-Man ghosts: Blinky, Pinky, Inky, and Clyde. Then, Pac-Man appears out of nowhere and shouts that he's off-topic. Then, Ludwig tells him to shut up, and they all start shouting at once. Bowser says his famous line from The Adventures of Super Mario Bros. 3 episode Toddler Terrors of Time Travel: "AH, SHUT YOUR CRAP!"

Crash
The doomogator on Bowser's Doomship malfunctions, and the Doomship falls, with the Smurfs, Gargamel, Azrael, Mario, Luigi, Princess Peach, Toad, Yoshi, Bowser, Bowser Jr, Ludwig, Lemmy, Roy, Iggy, Wendy, Morton, Larry, Pac-Man, Blinky, Pinky, Inky, Clyde, the Tyrannosaurus Rex, Kirby, Sonic, and Pikachu still on it, screaming as they fall to their deaths. Then Perry the Platypus eats Glucose and says "It's a go-time! JOKULL!" Then Ludwig shouts "Stay on topic!"

Just Kidding!
The just floated safetly onto the ground, and the Koopas become good guys. Then, Gargamel and Azrael chase the Smurfs into the warp pipe.