El argumento de esa novela me parece interesante.

This is a very common question because argumento is a false friend.

In this sentence, el argumento means the plot or the storyline of a novel, film, or play.

In Spanish, argumento can mean:

• plot / storyline of a work of fiction
• argument / reason in a logical discussion

But it usually does not mean an angry disagreement in the same everyday way English argument often does.

So here:

• El argumento de esa novela = the plot of that novel

A similar word is la trama, which also means plot.

Spanish often uses the definite article where English might omit it.

Here, el argumento means the plot. Since we are talking about the plot of a specific novel, Spanish naturally uses el.

So:

• El argumento de esa novela = the plot of that novel

Leaving out el would usually sound incomplete in a normal sentence.

Esa means that.

Spanish demonstratives show distance:

• esta = this (near the speaker)
• esa = that (near the listener, or not especially near the speaker)
• aquella = that over there / that one over there (far from both)

So:

• esa novela = that novel

In many everyday situations, esa is the most natural choice for that.

Me is an indirect object pronoun meaning to me.

The verb parecer often works like this:

• Algo me parece + adjective
• literally: Something seems to me + adjective

So:

• El argumento de esa novela me parece interesante
• literally: The plot of that novel seems interesting to me

In more natural English, this often becomes:

• The plot of that novel seems interesting to me
• I find the plot of that novel interesting
• I think the plot of that novel is interesting

You can, but the meaning changes slightly.

• Me parece interesante = It seems interesting to me / I find it interesting
• Parece interesante = It seems interesting

With me, you make it clear that this is your personal impression.

Without me, the sentence sounds a bit more general or neutral.

Parecer often means to seem or to appear.

A very common pattern is:

• [thing] + me/te/le/nos/os/les + parece + adjective

Examples:

• Me parece bien = It seems good to me / Sounds good to me
• Te parece difícil = It seems difficult to you
• Les parece raro = It seems strange to them

So in your sentence:

• El argumento = the thing being judged
• me = to me
• parece = seems
• interesante = interesting

Because the subject is el argumento, which is singular.

Breakdown:

• El argumento = singular subject
• therefore parece = he/she/it seems form, singular

If the subject were plural, the verb would change:

• Los argumentos de esas novelas me parecen interesantes
• The plots of those novels seem interesting to me

Because interesante is an adjective that ends in -e, and adjectives of this type usually do not change for masculine/feminine.

So:

• un libro interesante
• una novela interesante

The adjective does change for number:

• singular: interesante
• plural: interesantes

Examples:

• el argumento interesante
• la historia interesante
• los argumentos interesantes
• las novelas interesantes

Yes, it does agree, but only in number here.

Since argumento is:

• masculine
• singular

the adjective must also be singular. But because interesante has the same form for masculine and feminine singular, you do not see a gender change.

So the agreement is correct:

• argumento interesante not
• argumento interesantes

Yes. That would be very natural.

Both can work:

• el argumento = the plot, storyline, subject matter
• la trama = the plot, often with a stronger sense of how events are structured or unfold

In many contexts, la trama is the more everyday word for plot, while el argumento can sound a bit broader or slightly more literary, depending on context.

So both are good:

• El argumento de esa novela me parece interesante
• La trama de esa novela me parece interesante

Because object pronouns like me, te, le, nos, os, les normally go before a conjugated verb.

So:

• me parece
• te parece
• le parece

Not:

• parece me
• parece te

This is a basic Spanish word-order rule with pronouns.

Yes. Spanish word order is often flexible.

The original sentence:

• El argumento de esa novela me parece interesante

A possible variation:

• Me parece interesante el argumento de esa novela

This still means the same thing, but it puts a little more focus on your reaction first: It seems interesting to me, the plot of that novel.

The original version is very neutral and natural.

It is usually a bit softer and more subjective.

• Es interesante = It is interesting
• Me parece interesante = It seems interesting to me / I find it interesting

Using me parece makes the statement feel more like a personal opinion and often a little less absolute.

That is why me parece is very common in conversation: it sounds natural and not too blunt.

Yes, absolutely.

• Me parece interesante = normal, neutral
• A mí me parece interesante = To me, it seems interesting

The phrase a mí adds emphasis or contrast.

For example:

• A mí me parece interesante, pero a mi hermano no.
• I find it interesting, but my brother doesn’t.

So in your sentence:

• El argumento de esa novela me parece interesante is the normal version.

If you want emphasis:

• El argumento de esa novela a mí me parece interesante

Yes, very common.

Spanish often uses me parece + adjective or me parece que + clause to express opinions politely and naturally.

Examples:

• Me parece buena idea = It seems like a good idea to me
• Me parece raro = That seems strange to me
• Me parece que tienes razón = I think you’re right

So your sentence is a very natural opinion sentence in everyday Spanish.