Concepts or plans (5)
I believe the answer is:
ideas
I believe this clue is a double definition.
'concepts' is the first definition.
(I've seen this in another clue)
'plans' is the second definition.
(idea can mean a plan or intention)
(Other definitions for ideas that I've seen before include "Thoughts from Sadie" , "Thoughts or opinions" , "thinking" , "Notions, concepts" , "Aside (anag.)" .)