Ram Murthy, Nagineedu Vellanki a retired head master, lives by a rigid code that governs not only his actions but the entire family. He believes discipline should be the bedrock of home life, so he drafts a stern family constitution with a single, uncompromising rule: if anyone commits 100 mistakes, they are banished from the house. This extreme code twists ordinary days into tests of virtue, nudging every member to suppress flaws and polish appearances. The tension thickens when his own brother Subrahmanyam is accused of reaching that dreaded threshold, and though he is innocent, he is driven away, underscoring how swiftly loyalty can buckle under extreme control.
Sundeep, Sundeep Kishan, the family’s impulsive pulse, finds himself sprinting to keep from hitting the 100-mistake wall. To avoid the 100th misstep, he begins a careful, almost paranoid dance of caution. The situation intensifies on a day filled with travel plans for Brahmaji’s Tirupati wedding, as the family boards the Venkatadri Express from Kacheguda. The mangala sutra—the sacred emblem of marriage—has been forgotten at home by Sundeep’s mother, setting off a frantic scramble. Sundeep, with a mix of daring and luck, borrows an auto to reach the station and, in a series of rapid, comic gambits, retrieves the sutra and hurries back to the train. Along the way, a miserly techie named Prarthana, Rakul Preet Singh, arrives in time to catch the same departure, catalyzing a chain of near-misses that test Sundeep’s resolve and the breath of his awakening freedom from rigid rules.
Prarthana’s arrival throws a new spark into the journey as the pair’s paths collide repeatedly across platforms and towns. The train misadventures take them through a kaleidoscope of misfortune and mischief: a torn itinerary, a mistaken car, a wrong platform, and a string of late arrivals that create a volatile clockwork of delays. A crucial moment arrives when a passenger named Dasthagiri entrusts his bag to Sundeep, and their shared mobile numbers become lifelines to reconnect after every scramble. The two soon share more than just misadventures; they develop a wary camaraderie that gradually blooms into mutual respect, even as Prarthana remains wary of Sundeep’s chaotic world.
Their most poignant act comes in Kadapa, where the duo helps two eloped lovers escape the clutches of the girl’s father and his henchmen. They ingeniously orchestrate a wedding and, in a twist that echo the film’s central conflict, they transfer the mangala sutra that was meant for Brahmaji to seal the lovers’ union. The revelry dissolves into a storm when the bride’s father learns of the elopement and vows retaliation, forcing Sundeep into a perilous chase. The drama culminates at a hospital, where a severe asthma attack befalls Seetha, Meena Vasu, and Ram Murthy must choose between his iron-clad code and a family member who needs help.
Ram Murthy’s pursuit becomes a crucible that tests every tenet he holds sacred. He pushes through red traffic signals and, in the heat of the moment, ends up injuring a traffic constable while attempting to save those in danger. This confrontation forces him to confront the consequences of his inflexible creed. When the truth finally surfaces—that Sundeep’s actions were driven by a genuine, selfless impulse to protect others—Ram Murthy begins to reconsider the line between discipline and mercy. The moment of reckoning shifts the balance: the “100 mistakes” rule is broken, and the family is allowed to re-enter the fold, expanded from 100 to 1000 mistakes as a symbolic reset that embraces accountability, compassion, and second chances.
Three months later, at Brahmaji’s engagement, a tense, anxious Sundeep confides in Prarthana about his near-miss with the 1000th threshold—the 999th almost completed and the 1000th within reach. The pair’s relationship, forged through a whirlwind of train journeys and heart-stopping crises, now stands on a new footing: a blend of trust, resilience, and a shared belief that small acts of courage can alter even the strictest rules. Through humor and heart, the story threads together a family’s dilemma and a young man’s growth, showing that discipline, when tempered with empathy, can protect and unite rather than exile and condemn.
