कहानी में बचपन की झलक है।

A natural breakdown is:

कहानी = story
में = in
बचपन = childhood
की = of / ’s
झलक = glimpse, hint, trace
है = is

So the literal order is roughly:

In the story, childhood’s glimpse is.

Natural English would be:

There is a glimpse of childhood in the story.

Hindi uses postpositions, not prepositions.

In English, we say in the story.
In Hindi, the equivalent word में comes after the noun:

कहानी में = in the story

This is very normal in Hindi:

• घर में = in the house
• किताब में = in the book
• कहानी में = in the story

Because का / की / के agrees with the noun that comes after it — the thing being described or possessed — not with बचपन.

Here, the noun after it is झलक, and झलक is feminine singular, so the correct form is की:

बचपन की झलक = a glimpse of childhood

Compare:

• बचपन का असर = the effect of childhood (असर is masculine)
• बचपन की याद = memory of childhood (याद is feminine)
• बचपन के दिन = childhood days (दिन is plural)

Technically, a noun before a postposition or a genitive marker like का / की / के is in the oblique form. However, many nouns do not visibly change in the singular.

बचपन is one of those nouns. Its form stays the same:

• direct: बचपन
• oblique: बचपन

So even though it is functioning in a genitive construction, you still see बचपन unchanged.

झलक is a feminine noun.

That matters because the possessive marker का / की / के must match the gender and number of the following noun:

• masculine singular: का
• feminine singular: की
• plural / respectful: के

Since झलक is feminine singular, the sentence uses की:

बचपन की झलक

Hindi normally puts the main verb or copula near the end of the sentence.

So instead of English word order like:

There is a glimpse of childhood in the story

Hindi naturally says:

कहानी में बचपन की झलक है।

This is a very common Hindi pattern: location + thing + है

For example:

• कमरे में एक मेज़ है। = There is a table in the room.
• किताब में चित्र हैं। = There are pictures in the book.
• कहानी में बचपन की झलक है। = There is a glimpse of childhood in the story.

Yes.

Hindi often expresses there is / there are with this kind of structure:

X में Y है = There is Y in X

Here:

• X = कहानी में = in the story
• Y = बचपन की झलक = a glimpse of childhood

So the sentence literally uses है, but in English the best translation is often there is.

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

So झलक by itself can mean:

• a glimpse
• the glimpse
• just glimpse

The exact English choice depends on context. In this sentence, a glimpse of childhood is the most natural translation.

If you want to make a more explicit in Hindi, you can add एक: कहानी में बचपन की एक झलक है।

झलक means something like:

• glimpse
• hint
• trace
• touch
• flash

In a literary sentence like this, it usually means that the story contains some feeling, suggestion, or small reflection of childhood — not necessarily a full description of childhood.

So बचपन की झलक is more subtle than a direct statement like यह कहानी बचपन के बारे में है.

Yes, absolutely.

कहानी में बचपन की झलक है।
and
कहानी में बचपन की एक झलक है।

are both natural.

The version with एक makes the noun more explicitly countable, like a glimpse.
The version without एक can sound slightly smoother or more literary.

Yes, Hindi word order is somewhat flexible, but not all versions sound equally neutral.

The most natural neutral order here is:

कहानी में बचपन की झलक है।

You could also say:

बचपन की झलक कहानी में है।

This is grammatical, but it gives a different emphasis — it may sound like you are stressing where that glimpse is.

In simple statements, है usually stays at or near the end.

It is more abstract here.

में often means physical in, but it is also commonly used for abstract inclusion:

• किताब में = in the book
• फिल्म में = in the film
• कहानी में = in the story
• जीवन में = in life

So here कहानी में means within the content of the story, not physically inside something.

It is a simple existential/descriptive sentence.

It says that something is present in something else:

• location/context: कहानी में
• thing present: बचपन की झलक
• existence: है

So structurally, it is a very useful pattern for learners:

[place/context] + [thing] + है

Once you know this pattern, you can make many similar sentences very easily.