Create an Animation for into

I wanted an animation for introduction page of my presentation. I want to make a presentation on microorganisms . and i wish that the animation should be like as follows.. a little boy wakes up and walks to clean his teeth, while brushing, the time he takes out his brush he see a cartoonish bacteria sort of thing on the brush and he fears a lot and throws the brush in wash basin , some more bacteria and micro organism walks in from the basin and they all create a mess, walks here and there and a title"Microorganisms" is flashed on the mirror , then a creature from them walks up and eats up the topic micro organism