Simplify the following text for a Grade 8 native English-speaking person.
Original: Foster 's Home for Imaginary Friends was founded by the elderly Madame Foster to provide a foster home for abandoned imaginary friends .
Simplified: In the show 's world , imaginary friends are as real as humans . Once the creator decides he or she does not want the imaginary friend anymore , they are sent to live at `` Foster 's Home for Imaginary Friends , '' an adoption home for the unwanted imaginary friends .