Takes place after Tasha and Reade leave Kurt's apartment in the season 2 finale. Tasha invites Reade in to have a drink and he admits to feeling responsible for Tasha being shot.
After taking down Sandstorm, the team is granted a couple weeks off. Tasha deals with reoccurring nightmares of being shot and Reade spends countless nights at her place to help her recuperate.
Tasha and Reade are only weeks into their relationship when they share a very traumatic experience. It will either bring them closer or tear them apart.