Conspiracy is a synonym of Scheme. Plot is a type of Scheme. 
Pad is a type of Fill. you are likely to find Pad in/at/on Planner. Designer is a type of Planner. Designer is a synonym of Developer. 
Conspiracy <--Synonym--> Scheme <--IsA-- Plot 
Fill <--IsA-- Pad --AtLocation--> Planner <--IsA-- Designer <--Synonym--> Developer 