Mario and Luigi go to the cannon in Delfino Plaza and both get shot out of it.
Mario and Luigi: Whhhhhhhhhhhhhheeeeeeeeeeeeeeeeeeeeeeeeeeeee!!!
Mario and Luigi enter the door to the park.
Luigi: Let's ride the Yoshi-Go-Round!
Mario: Ok!
Mario and Luigi go over to the Yoshi-Go-Round.
Luigi: I'll ride this one!
Mario: Uh... Luigi, there isn't a Yoshi there.
Luigi: WHAT?!
Luigi's jaw drops.
Mario: Maybe a Yoshi's somewhere in this park. We'll go look! I'll look over there by the pool, and you head over there near that Pianta-shaped tree!
Luigi: Ok!
Mario heads to the pool and finds no Yoshi over there. Luigi heads to the Pianta-shaped tree and finds a Yoshi egg behind it.
Luigi: Let's see... it needs a pineapple! Where would one be?
Luigi goes up the hill and finds a pineapple.
Luigi: Voila!
Luigi grabs the pineapple and goes back to the Yoshi egg. It hatches. He rides the orange Yoshi to the Yoshi-Go-Round and sees Mario.
Luigi: I found a Yoshi, Mario!
Mario: Great!
Mario and Luigi go to the missing Yoshi's spot. Once they reach it, a portal sudenly appears and Mario and Luigi get sucked in. Shadow Mario steals their FLUDDs, as always, and the Mario Bros. appear in an obstacle course.
Luigi: Let's get this over with!
Mario and Luigi triple jump past all the spinning boxes and come to some egg blocks. Luigi jumps on the red one and stays there. Suddenly...
Mario: LUIGI!
Luigi: What?
Mario: You're about to crash into a wall!
Luigi: Oh no!
Luigi falls from crashing into a wall and loses a life.
Mario: I guess I'll have to do the rest.
Mario jumps onto the Red Egg Block, and when the time is right, he jumps to the green one, then the black one, then the blue one. He gets a 1-Up on the Blue Egg Block. He jumps from Egg Block to Egg Block on the other side and lands on a platform. He rides the next block to a big block structure. He rides the next block to another part of the structure.
Mario: Looks like I'll need to Wall Kick to get up there...
Mario wall-kicks up the shaft. Up there he Side Somersaults onto an elevator block. At the block's peak, he Side Somersaults off it onto a platform. He jumps onto the next platform and grabs the Shine. He does the Shine Sprite Dance.
Mario: Woohoo! Time to get back to Luigi
and get the next Shine!