Starlight after finding out about the lies Celestia hid from her refuses to listen to anything she says this leads Celestia to unleash her secret weapon.
This is a the continued version of Foalsat by Pinkie in this version Starlight is shown doing more foal related activities and letting go of all her worries.
Its about giving others or more specifically one pony a chance despite the odds of the pony species being obliterated. She stands between the destruction of Equestria and safe continuing of it's in habitats.
