“SOCO” skims through the details and pieces of evidence that led authorities to pinpoint the person behind the grisly killing of 43-year old TNVS driver Maria Cristina Palanca who was discovered lifeless under a sink inside an apartment in Barangay San Andres, Cainta, Rizal. "Mae" shares how her sister Cristina became a TNVS driver, and recalls the time she went missing, as well as, the actions they took in search of her. The program then reenacts how Cristina was murdered and how her body was discovered. Cainta PNP chief Alvin Consolacion gives information about the crime scene and how they identified Paolo Largado as the main suspect behind the killing. Later, the family and friends of the victim call for justice for her untimely and brutal death.