Jay Jay

Jamuna writes her contact details on the 100-rupee bill because she believes in destiny. She tells Jagan that if either of them finds the bill within a year, they should marry. This is her playful way of testing whether fate will bring them together again. She pays the waiter with the bill, and it gets passed along before Jagan can retrieve it, setting up the central search plot of the movie.

Earlier in the bookstore, Jamuna kisses a book before writing her name in it, showing her romantic and destiny-driven personality.

Jagan gets engaged to Seema under evolving circumstances created by family pressures. The exact details of how the engagement came about are not fully detailed in the summary, but it appears to be a forced or circumstantial engagement. Seema gradually discovers that Jagan's heart still belongs to Jamuna, which creates tension throughout the story.

Seema grows fond of Jagan after he saves her from goons, establishing an early romantic interest that eventually leads to the engagement.

When Jamuna arrives in Chennai and visits Jagan's house, his father introduces another boy as Jagan. This lie appears to be an attempt to protect Jagan from the complications of Jamuna's unexpected arrival, possibly to buy time or avoid confrontations with Seema's family. After Jamuna leaves in disappointment, the boy reveals the truth to Meera, who then informs Jamuna.

Jagan heads to Kolkata while Jamuna travels to Chennai to confess their feelings for each other. Their trains cross at Vizag, but due to the timing and the specific trains they board, they fail to see each other. This is a pivotal missed connection that highlights how close they are to reuniting but how fate keeps pulling them apart.

Seema finds Jamuna's book that was left at the cafe where they first met. When Jagan reads the Bengali words in the book, he realizes Jamuna is from Bengal (Kolkata), not Chennai as he might have assumed. This clue strengthens his resolve to search for her in Kolkata.

Earlier, Jamuna was writing her name in the book at the bookstore before being interrupted by Jagan.

Guna is a family friend in Kolkata who proposes to Jamuna. However, when the situation requires Jamuna to go to Chennai to be with Jagan, Guna sacrifices his own romantic hopes and helps facilitate her journey instead of standing in her way. His selflessness allows the final reunion to happen.

Jamuna manages to locate the bill while eating pani puri in Kolkata, a moment that seems like destiny is on her side. However, a petty thief snatches the money away from her before she can keep it safe. This devastating loss makes her break down, and Meera scolds her for seemingly abandoning Jagan in Chennai.

Meera is Jamuna's cousin from Kolkata who helps her search for the bill. However, it's later revealed that Meera is also connected to Jagan - she shares a hostel with him in Chennai. This coincidental connection helps bridge the gap between the two lovers and facilitates communication between them as the story progresses.

After multiple missed connections, misunderstandings, and obstacles involving Seema's family opposition, the truth eventually comes out. Jagan finds the note confirming Jamuna's address, Seema's elder brother offers his blessing, Meera and Jamuna travel to Chennai, and Guna steps aside. The story culminates with Jagan and Jamuna meeting again at a coffee shop and deciding to unite.

The 100-rupee bill vow at their first coffee meeting foreshadows their ultimate reunion at a coffee shop.

Jagan continues searching for the bill because it represents his commitment to Jamuna and his belief in their destined connection. The bill serves as both a literal token of their promise and a symbol of his love. With help from his friends, he conducts a determined search throughout Chennai, unwilling to give up on the possibility that fate brought them together.