I have found theses on a similar subject to my own, and want to use their references with my own text and a similar flow. Is this plagiarism?
There are actually two concerns here:


Is it plagiarism? 

The authors of the theses you are reading have made an intellectual contribution: interpretation, summarization, organization and curation of references. 

If you just paraphrase their work, the reader will assume that you carefully curated that list from the literature and that you came up with that "flow" yourself. If you don't tell the reader otherwise, it is plagiarism. 

However, you can avoid concerns of plagiarism by citing the thesis from which you got got this, and making it clear to the reader what is your original work (the text) and what isn't (the reference list and the "thought flow").
Does it satisfy expectations for a masters thesis in your department? 

Generally, a masters student is supposed to be able to read and curate the literature, and place their work in the context of the literature (the "thought flow") themself. 

If you copy this from someone else, even if you cite them (so it isn't plagiarism), you may not be doing what's expected from you as a masters student.