My Friend Pedro is a side-scrolling action game in which you kick skateboards at gangster's heads under the guidance of a talking banana. Would you like a longer introduction, or shall we crack on?
Yeah, that's what I thought.
Your nameless protagonist (Pedro is the name of the banana, just in case "the talking banana" wasn't specific enough) awakes rather inconveniently in the basement of a mafia hideout. He has no memory of how he got there, and his only companion is a floating piece of fruit that strongly encourages him to kill everyone, which I suppose is as good a motivation as any.