Mercury opposes Pluto and this transit is exact in the early hours of June 23, so the energy will be felt before it becomes exact.
This may make for a rough end of the week as this transit is obsessive, argumentative, overly intense and prone to revealing information you may not have previously known. Last week Mercury opposed Saturn at 6 degrees of Capricorn-Cancer, and this was heavy for many. We also saw much information revealed about immigrant children being taken away from their parents at the US border. We may see further information this week, and this will be an angry transit in the world.
Pluto is the bully, and this transit can bring them (bullies) out, or someone may try to convince you of something. A cool, calm and peaceful attitude will get you through the day better than the alternative. Or you could encounter other stressed out and argumentative people in your immediate environment.