Summer of Goliath is a documentary/fiction hybrid that narrates various stories of the people of the town of Huilotepec in rural Mexico. Teresa's husband has disappeared and she believes he has left her for another woman. Gabino, her son, is a soldier who searches cars at the side of a country road, where very few cars pass by. He hopes one day him and Alberto, his soldier partner, will get machine guns to further intimidate the people driving by. Amalio, Nico, and Oscar are three brothers whose stories we learn through a series of interviews and reenactments. Their father left them many years ago, and their mother can barely support them. Oscar has gained the nickname Goliath after the mysterious death of his girlfriend.

Vicente (Gabino Rodríguez) is a young farmer in a rural village who scrapes by while taking care of his ill grandmother. Several of Vicente’s uncles intend to their ailing mother’s land without her knowledge. Vicente seeks help from the municipal president who, between shooting hoops on a desolate court, tells him that if he wants justice, he must head to the capital to meet with government officials. Although he hasn’t seen her since he was a child, Vicente sets off in search of his mother, who works as a maid in maze-like Mexico City. With the help of his mother’s employer, a sophisticated middle-aged woman, he finds the government offices where he presents his case. His situation isn’t easily resolved, especially since he does not have the deed to his grandmother’s plot of land, and Vicente finds the complexities of the legal system to be completely overwhelming.

Refined, often millionaires, drug trafficker lawyers evolve within a territory where law, organized crime and corruption meet. They are smugglers, the visible actors of the collusion between criminal organizations and the legal, political and financial structures of countries crushed by narco-violence. This investigation penetrates into the depths of drug trafficking through a little-known angle, that of justice, and aims to deconstruct the preconceived idea of the drug trafficker as the sole responsible for violence. "If you kill, call me" debunks the myth of drug trafficking by penetrating, through drug trafficker lawyers, into the heart of the legal system to reveal its deep complicity with organized crime.