You have a total of 4 descriptions of your main characters they are; rich, young, spoiled and they are super heroes this is confusing. Better to find that one perfect description that explains them in fewer words.

Further more the reader doesn’t know who the main character is, it sounds like a multi protagonist plot because of the use of plurals but no number was specified. This leaves the interpretation open to an arbitrary number of protagonists which makes this a very difficult concept to imagine on ones own.

Who is the story about? Is it one person? Two people? Three people? What is their relationship with each other? How young are they? Do they work as superheros or hold other jobs during the day and hero at night?

The reason this all needs clarification is because in order to find the concept interesting the reader needs to understand how loosing their powers will affect them seeing as this is the inciting incident.

Hope this helps.

The sentence doesn’t make much sense due to the grammar errors, as a result, it is hard to understand the concept.

Who is exploring the school that was closed 20 years ago? How is this relevant to the plot?

What I did understand was that the main character is an aging cop and the inciting incident is the 3 teenagers being killed. If that is the case, why does the school need to be mentioned in the logline?

Also “…realizes there is more to this case…” is too vague to include in the logline. What does he realize and how? If this is going to be his obstacle best to describe it in a clear and accurate manner.

Hope this helps.