Raj, Sami, Nisha, Riyad, and Mahi - five friends were chatting while sitting in the college canteen.

Sami was saying, "Bro, we need an adventure. We need to do something in life."

Suddenly, Raj's phone rang. It was his grandfather.

Grandfather said, "Raj, come to your grandfather's house. I've found something."

Raj went to his grandfather's house with his friends. Grandfather took out an old wooden box. Inside the box was a letter on yellowed paper.

Grandfather said, "This letter was written by your great-grandfather. He wrote about a mysterious temple in the Sundarbans."

Raj began to read the letter. The letter said:

"There is a temple deep within the Sundarbans. Many mysteries are hidden there. But beware, those who go there do not return."

Nisha said, "Wow! This is so exciting!"

Grandfather said solemnly, "Boys, no one goes to this temple. Locals say it's haunted. Those who went have never returned."

Raj said, "But Grandpa, we are brave. We can go."

Sami said fearfully, "No bro, this could be dangerous."

Riyad said, "Don't be afraid, Sami. We are all together. Nothing will happen."

Mahi said, "I'm with Raj. Adventure sounds good."

Grandfather said, "If you go, stay safe. And take this letter. It might be useful."

Raj took the letter. He felt that this adventure would change their lives.

Excitement was burning in the eyes of the five friends. They realized a great adventure was waiting for them.

The friends were preparing. They were packing bags and taking supplies.

Nisha said, "We will set out tomorrow morning."

Sami was still afraid, but he agreed for his friends' sake.

Raj said, "Okay. Tomorrow morning at 6 AM at the bus stand."

They all raised their hands together. Their adventure was about to begin.

Everyone had fallen asleep, but Raj woke up. He looked outside the window. He saw a shadow in the moonlight.

The shadow was looking at him. Raj felt afraid, but he couldn't understand what it was.

He closed the window and went to bed. But he felt as if someone was calling him.

"Raj... Raj..." a whispering sound drifted in.

Raj shouted out, "Who's there! Who's there!"

His father rushed in, "What happened, son?"

Raj said, "Someone was calling me."

His father said, "There's no one. Go back to sleep."

Raj lay back down, but he understood that this adventure would not be easy.

The friends met at the bus stand. There was excitement and a little fear on their faces.

Raj said, "Are you all ready?"

Everyone nodded. They set off for the Sundarbans. Their adventure had begun.

They were chatting and laughing on the bus. But Raj had the last night's incident on his mind.

Sami said, "Raj, what are you thinking about?"

Raj said, "No, nothing."

But Raj knew that something was going to happen. Their adventure wouldn't just be fun; it would be dangerous. The bus arrived near the Sundarbans. They knew their lives were going to change.