कहानी कल छपेगी।

• कहानी = story
• कल = tomorrow (or yesterday in other contexts)
• छपेगी = will be printed / will be published

So the sentence literally works like: Story tomorrow will-be-published.

In Hindi, कल can mean either yesterday or tomorrow. The tense of the verb usually makes it clear.

Here, छपेगी is a future-tense form, so कल must mean tomorrow.

• कल छपी = was published yesterday
• कल छपेगी = will be published tomorrow

So context and verb tense tell you which meaning is intended.

छपेगी is the future tense of the verb छपना, which means to be printed or to get published.

This verb is different from छापना, which means to print/publish something as an action done by someone.

Compare:

• अख़बार कहानी छापेगा। = The newspaper will publish the story.
  Here छापेगा comes from छापना and has an active meaning.

• कहानी छपेगी। = The story will be published.
  Here छपेगी comes from छपना and focuses on the story being published.

Because कहानी is a feminine singular noun, and the future verb agrees with it.

In this sentence:

• कहानी = feminine singular
• so the verb is छपेगी

If the subject were masculine singular, you would usually get -गा:

• लेख कल छपेगा। = The article will be published tomorrow.

If it were feminine plural, you would get -ेंगी:

• कहानियाँ कल छपेंगी। = The stories will be published tomorrow.

It comes from the verb stem छप- plus a future ending.

For third person singular feminine, the future ending is -ेगी:

• छप + ेगी = छपेगी

This is a very common future pattern in Hindi.

Examples:

• वह आएगी = she will come
• गाड़ी चलेगी = the car will run / go
• कहानी छपेगी = the story will be published

Hindi normally does not use articles like English a, an, and the.

So कहानी can mean:

• a story
• the story

Which one sounds best depends on context. In many translations, this sentence would naturally become The story will be published tomorrow, but Hindi itself does not mark that distinction here.

Hindi word order is often Subject + Time + Verb, so कहानी कल छपेगी is very natural.

But कल can move around for emphasis, as long as the verb stays at or near the end:

• कहानी कल छपेगी।
• कल कहानी छपेगी।

Both are fine. The meaning is basically the same, though the emphasis can shift slightly.

Hindi is more flexible than English with word order, but the verb usually comes last.

In English, will be published looks passive. In Hindi, छपना behaves like its own intransitive verb meaning to get printed / to appear in print / to be published.

So while the English translation may use a passive structure, Hindi is not necessarily building this with a separate passive construction here. It is simply using the verb छपना.

A more explicitly active sentence would be:

• वे कहानी कल छापेंगे। = They will publish the story tomorrow.

But कहानी कल छपेगी। keeps the focus on the story itself.

A simple approximate pronunciation is:

chha-pe-gee

Breakdown:

• छ = an aspirated chh sound
• पे = peh/pay
• गी = gee

So the whole word sounds roughly like chha-PAY-gee.

And the full sentence is approximately:

kahaa-nee kal chha-PAY-gee

Usually कहानी means story, especially a short story or a general story.

For novel, Hindi more commonly uses:

• उपन्यास

So:

• कहानी = story
• उपन्यास = novel

Depending on context, कहानी can sometimes refer more broadly to a narrative, but story is the safest translation here.

It is a perfectly natural sentence, but there are other natural ways too, depending on context.

For example:

• कहानी कल प्रकाशित होगी।
  This is a bit more formal. प्रकाशित होना means to be published.

• कहानी कल छपेगी।
  This is simpler and very natural, especially for something appearing in print.

So छपेगी is common and idiomatic, especially when talking about newspapers, magazines, printed stories, and similar contexts.