In today's edition of the Tamil Nadu Brief, NDTV's Sam Daniel brings you Chief Minister Vijay's anti-drug marathon and his pledge to eradicate drug abuse. The campaign is overshadowed by a viral video showing Minister D. Sarathkumar crushing a white substance on his mobile phone, triggering allegations online. While the DMK has demanded a police investigation, the minister says he was only crushing a tablet for his sick child. Also, a major political setback for the MDMK as one of its two MLAs announces he will remain with the DMK amid speculation that the party is set to join the ruling TVK alliance.