A Netflix Original, Travelers is a tv series created by Brad Wright who also created Stargate SG-1, Stargate Atlantis and Stargate Universe so the guy definitely knows his Sci-Fi!
The premise is that hundreds of years into a post-apocalyptic future, in which humanity is on the brink of extinction, special operatives are tasked with travelling back in time to the 21st century to prevent the collapse of society. But the twist is that it is their consciousnesses that are sent back and transferred into the host body of present-day individuals who would otherwise be moments from death. This means that they have to both carry out their missions while simultaneously pretending to be the people whose bodies they've just inhabited. That isn't actually as confusing as it sounds once you've watched the first episode!
Travelers focuses on one particular team of five agents made up by actors, Eric McCormack, Mackenzie Porter, Jared Abrahamson, Nesta Cooper, Reilly Dolman, who are all excellent in their roles. The missions they have to carry out are dictated by the Director, an artificial intelligence in the future that monitors the timeline and who communicates with the Travelers via children used as messengers. There are of course protocols and rules that must be followed but despite this their presence and actions cause unexpected consequences that play out over the series.
This is a very clever show that as well as being very entertaining, genuinely looks at how present day humanity is slowly impacting on any sort of quality of life for generations well into the future and with each episode having it's own storyline as well as a continuing arc over the season, it will definitely keep you coming back for more, though at times I did wish it would hurry up a little! There are two seasons available on Netflix with Season 3 due to stream in late 2018. And if you're all caught up but like the genre, then take a look at Altered Carbon – a grittier sci-fi show that has a huge following.