DinosaurfollowsNina(AshleyStorrie),anautisticwomaninher30s,whoadoresherlifelivingwithhersisterandbestfriendEvie.However,whenEvierushesintoanengagementafteronlysixweeksandmakesNinahermaidofhonour,Ninaisfloored.Forcedtoreconcilewithhersister’simpulsivedecision,Ninagrappleswithwhatthisnewchallengemeans.Nina’srelationshipwithhersisterisn’ttheonlychangethatshe’snavigating,assheexploresnewpossibilitiesinherpalaeontologycareerandapotentialnewrelationshipinherownlifewiththeintroductionofkind-heartedLee,whohelpsNinatoseethesenewchallengesinamorepositivelight.Astheirrelationshipblossoms,weseethatNinahelpsLeejustasmuchashehelpsher.
