"GLITCHES" 
 is telling the story of Cinder, Cinder is a cyborg girl (half human, half robot), she doesn't remember anything about her past except that her parents died in an accident and she was lucky enough to survive and to be saved by scientists who replaced her damaged body with cyborg parts. 
 Basically this story is explaining how Cinder was adopted by Linth family and how she was left alone to face the cruelty of Adri (her stepmother) and pearl (her step sister).