PACTO DE SANGRE tells the story of Benjamin, Marco, Ruben, and Gabriel who have managed to maintain their friendship for many years despite their differences. This group, which has decades of complicity, also includes their partners, the current and significant women in their lives, Tamara, Miranda, Ana and Julieta. However, the unfortunate death of a dancer at Ruben's bachelor party will forever change their destinies, leading them to oscillate between guilt and the fear of losing the lives they have built.