Complete story — includes the ending
A younger Diaz is shown in an orphanage being harassed by a bully. In the present, Diaz starts the next phase of his plan, which is to join a criminal organization called The Quadrant. One of the four leaders of the group does not think that Diaz is worthy, painting him as a street thug, and tries to have his son kill him. With Laurel's help, Diaz wages a small war on the group, killing both the man and his son, then taking his seat at the table. Later on, Diaz tracks down the man who bullied him as a child and sets him on fire as Laurel watches uncomfortably. Meanwhile, Felicity and Curtis work together again on their Helix project while Oliver works alone in Star City. An explosion happens as Oliver is fighting Diaz's men, leaving no survivors. Felicity, fearing for Oliver's life, returns home to find him safe and sound, promising her that he will never leave her.
Sources and content license
Source and revision history · Adapted from Wikipedia contributors, Arrow season 6. HTML formatting and reference markers removed. · Content license