Tell a story about New Age family (7)
I believe the answer is:
lineage
'family' is the definition.
(I've seen this before)
'tell a story about new age' is the wordplay.
'tell a story' becomes 'lie'.
'about' is an insertion indicator.
'new' becomes 'n'.
'lie' enclosing 'n' is 'line'.
'line'+'age'='LINEAGE'
(Other definitions for lineage that I've seen before include "Descent from ancestors" , "Genealogy" , "Line of descendants of an ancestor" , "The strain" , "Descent (from an ancestor)" .)