ley , ▁Mar ito ▁L ope z ▁as ▁Mar ito , ▁and ▁Miguel ▁R ivas ▁in ▁various ▁roles . ▁ ▁Prem ise ▁ ▁The ▁series ▁opens ▁on ▁ag ing ▁Gary ▁as ▁he ▁ch ases ▁what ▁he ▁thinks ▁is ▁his ▁last ▁demon . ▁After ▁a ▁disappoint ing ▁failed ▁capture ▁resulting ▁in ▁him ▁inj uring ▁an ▁innoc ent ▁hom eless ▁boy , ▁Gary ▁returns ▁to ▁the ▁Dem on ▁Ministry ▁to ▁attend ▁his ▁own ▁ret irement ▁party ▁- ▁his ▁second ▁ret irement ▁party ▁in ▁thirty ▁years ▁since ▁Ch osen ▁One ▁status ▁is ▁only ▁meant ▁to ▁last ▁fifteen ▁years . ▁Short ly ▁after ▁an ▁under wh el ming ▁ret irement ▁speech ▁his ▁b oss , ▁Les lie , ▁reve als ▁to ▁him ▁that ▁they ' ve ▁once ▁again ▁failed ▁to ▁find ▁his ▁replacement , ▁and ▁she ▁asks ▁him ▁to ▁serve ▁one ▁more ▁term ▁as ▁Ch osen ▁One ▁- ▁which ▁would ▁mean ▁fighting ▁until ▁he ▁turns ▁ 6 0 . ▁The ▁show ▁revol ves ▁around ▁Gary ' s ▁advent ures ▁in ▁demon ▁hunting ▁while ▁also ▁dealing ▁with ▁the ▁fr ustration ▁of ▁being ▁unable ▁to ▁ret ire . ▁ ▁Production ▁ ▁Im pro vis ation ▁ ▁Im pro vis ation ▁plays ▁a ▁heavy ▁role ▁in ▁recording ▁the ▁show , ▁and ▁the ▁final ▁product ▁is ▁a ▁marriage ▁of ▁the ▁script ▁and ▁impro vis ation . ▁The ▁cre ative ▁team ▁has ▁said ▁that ▁they ▁include ▁as ▁many ▁impro vis ers ▁in ▁recording ▁as ▁possible . ▁ ▁An imation ▁ ▁An imation ▁director ▁Louis ▁Sol is ▁has ▁said ▁that ▁the ▁team ▁used