Don't know latin in any way shape or form. Just was curious and used this like a small puzzle. Added a bit more context to words that weren't very self explanatory.

    TOTUS - all/whole

    VESTRI - your

    ARCANA - secrets

    NOCTI - night? - 'used in formation of compound words' [0]

    NOBIS - us/we

    EST - to be - "can be translated as 'it is,' 'he/she is,' or simply 'is.' It is the third person singular of the present tense of the verb 'to be'" [1]

Sooo my guess would be something along the lines "All the secrets of the night belong to us?"

If someone knows any better I would love to be corrected.

[0] - https://www.dictionary.com/browse/nocti- [1] - https://study.com/academy/answer/what-does-est-mean-in-latin...

[Edited with another mistake]

I suspect it uses the wrong case (declension) for some of those words and I'm not sure if arcana can be used as a noun--I've forgotten some of my Latin. My best guesses:

What was intended: "all the secrets of your night are ours"

It actually says something closer to: "all the secrets of your night are to us"

It should use noster, as opposed to nos (nobis in the dative case), if I understand the intended meaning correctly.

The reason I suspect wrong case is that nobis is in the dative case whereas I think it should be a nominative in order to agree with the subject (so "noster" in order to agree with totus).

All your bases are belong to us