Children imagine they're own imaginary フレンズ when they are young, we all know that. あなた had an imaginary friend when あなた were little right? But what happens to the friend when it's creator grows up? When he/she doesn't need it any more? Does the poor thing get thrown on the streets? Alone and helpless? Sadly yes. Kids used to throw they're フレンズ on the streets until a kind old woman (yet very enerjetic and full of life) named Madame Foster figured out a solution to this problem. She made an enormous, unbelievabbly big house for imaginary friends, a place they can call home, until someone...