In the heartwarming film "Saagu," we witness the extraordinary journey of Hari Babu and Subba Laxmi as they defy societal norms and embark on a courageous love story.

Hari, belonging to a lower caste, and Subba Laxmi find themselves entangled in a forbidden romance that challenges the deeply ingrained traditions of their community. Against the opposition of Subba Laxmi's father, they bravely marry and begin a life together, determined to forge their own path.

With their only remaining possession, a half-acre of land bequeathed by Hari's mother, they aspire to cultivate it and secure a future for their family. However, their dreams encounter numerous obstacles. The lack of water for irrigation and the reluctance of fellow farm owners, who fear Subba Laxmi's father, pose significant challenges.

Undeterred, Hari decides to take matters into his own hands and attempts agriculture, despite his lack of experience in the field. He faces rejection from his village community and neighboring farmers, who refuse to provide him with water. Desperate, he seeks the help of Ramesh, a person from a neighboring village, who agrees to set up a water motor on his land for a sum of 18,000 rupees., he seeks the help of Koteswararao, the cunning local general store owner, Koteswararao takes advantage of Hari's vulnerability. He slyly asks for Hari's farm papers as collateral,Subba Laxmi selflessly gives her cherished earrings to Hari, urging him to sell them and pay Ramesh to start the work. Tragically, Ramesh deceives Hari, absconding with the money and succumbing to alcoholism.

Devastated by this betrayal, Hari's spirit is shattered. Seeking solace, he turns to his friend Ramu, only to face rejection and casteist insults. Heartbroken, Hari returns home, unable to find solace in sleep and resorting to a sleeping pill.

Subba Laxmi, witnessing the anguish of her beloved husband, prepares his favorite fish curry in an attempt to console him. When the long-awaited rains finally arrive, she awakens with joy to share the good news with Hari. However, she finds him unresponsive, fearing the worst. To her relief, Hari had only taken a sleeping pill, and they embrace each other, finding solace in their love.

Renewed by their unwavering bond, Hari ventures once again to his agricultural land. Their story becomes a testament to the indomitable power of love and the resilience of the human spirit. Despite facing societal barriers and personal tribulations, Hari and Subba Laxmi's unwavering support for each other and their unwavering determination lead them to conquer every obstacle in their path.