Get TV SHow Plot

Situation: I am playing a TV SHow episode. I issue a json request to get info:-
{“jsonrpc”: “2.0”, “method”: “Player.GetItem”, “params”: { “properties”: [“title”,”description”,”showtitle”,”genre”,”plot”,”plotoutline”,”rating”,”art”, “album”, “artist”, “duration”, “thumbnail”, “file”, “fanart”, “streamdetails”], “playerid”: 1 }, “id”: “VideoGetItem”}

In my episode nfo file there is not plot so nothing is returned. However, i do have the main plot which tells me what
series is about.

How can i get this Plot info.

thanks