Pluto in the first house suggests someone who has been through a lot of turmoil in their early life. They may have experienced difficult circumstances, but they have also developed a lot of strength and resilience as a result. They may be attracted to positions that involve high risk, such as law enforcement or psychology, as they may enjoy figuring out mysteries.
In general, these aspects can indicate someone who is quite intense and can be difficult to get to know. However, they can also be very loyal and trustworthy friends.