A boy and his beloved imaginary friend are able to stay together at an orphanage of sorts for imaginary friends that children have outgrown to be adopted by new children. ... Mac strikes a deal with Madame Foster, the proprietor: as long as he comes to visit every day, Bloo will not be put up for adoption. Soon Mac comes across his friend Jimmy Neutron, who warns him about a devious plan by Marvin The Martian to enslave Imaginary Friends.
