30th of July: It was a hot, sunny morning in Guwahati. Ranjit's summer vacation was about to start tomorrow, and he was very excited, just like everybody else. He brushed his teeth, had eggs and milk for breakfast, wore his uniform, and got ready for school. When he reached the school, he sat with his friends, Abhishek and Ishaan. They talked about how they would be spending their summer vacation. 'Roll number nine! Is roll number nine present?' His class teacher asked repeatedly, 'Err, pr-present sir!" and everybody in the class started chuckling. The three were so busy talking that his class teacher exclaimed, "Three of you fools, stand outside the classroom and hold your ears!" After the final bell rang, they all went to their respective homes. 'You're finally home, Beta; did you enrol in a summer camp or something?' Ranjit's mother enquired. 'No, I didn't; why did you ask?' Replied Ranjit. Ranjit's mother told him that he had received a letter, but the sender's name is unknown. 'Hmm, pretty weird; let me read the letter.' The letter said:

'Dear Ranjit Boruah,

I hope this letter finds you well and sparks your curiosity. You may be wondering who I am and why I have chosen to reach out to you in this unconventional manner. Allow me to indulge in a little mystery. Behind the veil of anonymity, I invite you to participate in a clandestine encounter that promises excitement, intrigue, and the opportunity to unravel secrets hidden in the depths of your school's campus. The stage is set, and the time has come for you to step into the realm of the unknown. Under the sprawling canopy of the ancient banyan tree, hidden from prying eyes, we shall meet. It stands as a symbol of wisdom and whispers stories of forgotten times. There, behind your school's campus, awaits a secret challenge that will test your courage, wit, and ability to embrace the enigmatic. Once you accept this invitation, there is no turning back. Embrace the unknown and step into the realm of possibilities. Uncover the secrets that lie in wait, waiting to be discovered by a chosen few. Be warned, dear recipient, that this journey is not without its risks and challenges. But it is precisely through facing the unknown that we discover the true depths of our character. Your presence is eagerly anticipated. Meet me behind the school's campus, under the watchful gaze of the banyan tree, at 12:30 p.m. tomorrow. Await the signal, and together, we shall embark on an extraordinary adventure. Remember, curiosity is the key that unlocks the doors of the extraordinary.

Yours mysteriously,

An Unknown Sender'