One cheers, enthralled by a virtual reality film franchise (6)
I believe the answer is:
avatar
'film franchise' is the definition.
'avatar' can be an answer for 'film' (I've seen this before). I'm not sure about the 'franchise' bit.
'one cheers enthralled by a virtual reality' is the wordplay.
'one' becomes 'a' (a thing is one thing).
'cheers' becomes 'ta' (both can mean thank you).
'enthralled by' indicates putting letters inside ('enthral' can mean 'capture').
'virtual reality' becomes 'vr' (this could be a standard abbreviation of which I'm unaware).
'a'+'ta'='ata'
'a'+'vr'='avr'
'ata' placed within 'avr' is 'AVATAR'.
Can you help me to learn more?
(Other definitions for avatar that I've seen before include "Incarnation of a Hindu god" , "Incarnation; film (2009)" , "Person who embodies a particular ideal" , "A person who seems to embody a particular ideal" , "Manifestation of a deity; cyberspace icon" .)