Imagine a trailer like this...
The trailer starts with Toon Link on his pirate ship overlooking the horizon. All the while, a storm is brewing behind him with a sinister-looking galleon headlining the lightning. Toon Link jumps into the downstairs cabin and warily looks around. A comedic tripping sound is heard as Toon Link draws his sword.
Suddenly, smoke erupts from the back of the cabin as a shadow smashes into the walls. Toon Link is knocked onto the floor and braces himself with his shield. The shadow expands to reveal, sputtering sparks and smoke all the while...
KAOS KAUSES SOME KARNAGE!
Toon Link looks dumbfounded, as KAOS continues to try and scare the child. The robot then explodes in a slapstick manner. The camera zooms in on the reptilian hand that was presumably operating the robot polishing his crown, then focuses on Toon Link, panting for air in the smoke. The camera then zooms in on Toon Link, holding up his shield, as the reflection reveals the mastermind behind the invasion...
KING K ROOL CAME, SAW AND KONQUERED!
Gameplay footage starts and whatnot, showing off K. Rool's ruthless fighting style (mostly on the Kongs), confirming Pirate Ship's return and a new stage based on King of Swing. Gameplay ends with K. Rool's Final Smash, a cutscene involving K. Rool utilizing all of his personas against the opponent before KAOS appears, comically falling from the sky, and bursting onto the opponent in a Smart Bomb-esque explosion.
The after-credits scene shows K. Rool about to pummel Toon Link, before being uppercutted by Donkey Kong into the sky.