Narcos: Mexico is returning with its second season and we've been blessed with a trailer. The new trailer looks back at the old world and explores a new set of forbidden streets of Mexico. The new Narcos: Mexico season 2 trailer continues to follow the story of Félix Gallardo. Fans will play witness to his growing drug empire in Mexico but he has a new enemy to worry about. The new trailer informs that an American agent is on the trail of a drug king.