Needed help on animation project for company

here’s the basic need:  a 5-10 second animation of a crocodile stumbling out of a swamp and throwing up into a bucket, after which a real boy will reach into the animation, grab the bucket and as he pulls it out of the animation it turns into a cup. The boy drinks from the cup, looks into the camera and exclaims ” It’s chocolate milk!”

The animation and help with the transition is what I’m looking for unless you have someone who could produce the whole piece.