The season description should describe the events of a particular season. Don't use a generic description of the TV show. Don't include quotes or reviews from critics or publications.
For more information, see the iTunes TV Metadata Style Guide in Resources and Help.
The series description cannot exceed 900 characters, including spaces and punctuation.
Special characters must be encoded to appear on the iTunes Store. You can include accented characters in your metadata XML file as long as the file is in the iTunes required UTF-8 format. For more information and a complete list of all special characters, see the W3C website.