⁣In the early twenty-first century, the Tyrell Corporation, during what
was called the Nexus phase, developed robots, called "replicants", that
were supposed to aid society, the replicants which looked and acted like
humans. When the superhuman generation Nexus 6 replicants, used for
dangerous off-Earth endeavors, began a mutiny on an off-Earth colony,
replicants became illegal on Earth. Police units, called "blade
runners", have the job of destroying - or in their parlance "retiring" -
any replicant that makes its way back to or created on Earth, with
anyone convicted of aiding or assisting a replicant being sentenced to
death. It's now November, 2019 in Los Angeles, California. Rick Deckard,
a former blade runner, is called out of retirement when four known
replicants, most combat models, have made their way back to Earth, with
their leader being Roy Batty. One, Leon Kowalski, tried to infiltrate
his way into the Tyrell Corporation as an employee, but has since been
able to escape. Beyond following Leon's trail in hopes of finding and
retiring them all, Deckard believes part of what will help him is
figuring out what the replicants wanted with the Tyrell Corporation in
trying to infiltrate it. The answer may lie with Tyrell's fail-safe
backup mechanism. Beyond tracking the four, Deckard faces a possible
dilemma in encountering a fifth replicant: Rachael, who works as
Tyrell's assistant. The issue is that Dr. Elden Tyrell is experimenting
with her, to provide her with fake memories so as to be able to better
control her. With those memories, Rachael has no idea that she is not
human. The problem is not only Rachael's assistance to Deckard, but that
he is beginning to develop feelings for her.