The film revolves around the story of Abhijeet “Abhi”, a young man deeply infatuated with Bhoomi since their childhood. Abhi, portrayed as a lonely and suffering child, faces emotional turmoil stemming from a distant father whose work keeps him occupied and a mother who passed away when he was very young. In his quest for companionship, Abhi takes an unusual step by discarding a piece of chewed gum on the stairs, believing that whoever steps on it will become his friend. When Bhoomi unwittingly steps on the gum, Abhi seizes the opportunity to forge a friendship; however, his attempts prove unfruitful, leading him to be persistent in gaining her attention.
After witnessing Bhoomi being reprimanded by a teacher, Abhi acts out of loyalty and seeks revenge on her behalf. This incident raises alarm regarding his mental stability, resulting in his suspension from school. Subsequently, Abhi’s father relocates them to Kolkata due to work obligations, marking a significant shift in their lives.
Twelve years later, Bhoomi transitions from Bangladesh to Darjeeling to pursue a degree in Psychology at St. Joseph’s College. Not far behind, Abhi persuades his father to enroll him at the same institution, promising to be an exemplary student despite his previous academic struggles. Within the college walls, Abhi is heralded as “Mr. Perfect,” admired for his versatile talents and respectful demeanor towards women. As Bhoomi attempts to engage with Abhi, stemming from a place of curiosity regarding his identity, a surprising incident occurs when Abhi kisses her. This unexpected moment triggers Bhoomi's memory, leading her to assert that she harbors disdain for him, resulting in both characters walking away from each other.
A humorous yet chaotic sequence of events ensues as Abhi trails Bhoomi in an effort to express his feelings; however, each revelation is met with skepticism as others dismiss Bhoomi’s concerns as mere ‘hallucinations’. Bhoomi poses a challenge to Abhi—if he confesses to his true self, including revealing an anonymous love letter he once sent, she might reciprocate his feelings. Abhi agrees, expressing his heartfelt sentiments, but fate takes a turn when Bhoomi hands the rose he presented to Joy, claiming her love for him instead. This unexpected twist leaves Abhi devastated.
Complications deepen when Joy, who has his own affections for Bhoomi, fabricates an injury to frame Abhi, sparking a series of confrontations. Abhi, adhering to his promise to prioritize Bhoomi’s happiness, sets the stage for a selfless sacrifice. The saga takes a dramatic turn as Bhoomi's father ultimately discovers her relationship with Joy, leading to the decision of arranging her marriage to the son of an adversarial family. Determined to aid Bhoomi and Joy's reunion, Abhi embarks on a journey to Bangladesh, ultimately intersecting with Bhoomi’s family, who despite initial hostility, extends hospitality toward him.
As Bhoomi's wedding approaches, misunderstandings arise, culminating in her being taken hostage by the Talukdar family, driven by the son’s one-sided affections. In a testament to his commitment and bravery, Abhi rescues Bhoomi, solidifying his role as both protector and friend. With events spiraling further, Bhoomi’s father's erratic decision-making puts her honor at risk, prompting Abhi to marry her in a traditional Muslim ceremony as an act of nobility and to instill confidence in Bhoomi’s family.
The following day sees a complex web of emotions as Abhi, Bhoomi, and Joy navigate the repercussions of their intertwined fates. As their journey continues back to West Bengal by train, tensions rise, and violent clashes ensue. Abhi’s inner turmoil leads him back to his previous addictions while grappling with feelings of betrayal and guilt. He questions Bhoomi about her affections only to succumb to unconsciousness before receiving an answer.
Conflict escalates dramatically when Pratap arrives with his goons, turning the situation violent. Abhi, in a heroic act, takes a stab meant for Joy, cementing his love for Bhoomi. In a critical moment, Bhoomi's resolve is tested as she confronts Joy’s aggressive demands. Ultimately, Amid chaos and bloodshed, Bhoomi chooses to embrace her love for Abhi, and with her grandmother’s thread symbolically tied around his wrist, Abhi survives.
In a touching conclusion, as Abhi regains consciousness, he shares the childhood tune he whistled years ago. In a moment of connection fueled by love, Bhoomi joins him in whistling the melody, finally introducing herself as the one who loves him. The film culminates on a jubilant note with both Abhi and Bhoomi together, their enduring relationship illuminated through trials and tribulations, epitomizing the complexities of love and friendship.
