Lac 2: In "I. Derek hires Braeden to find Kate for him over her contract with the Calaveras. She soon finds the shelf with all her memories of Stiles. Deaton warns her along with Scott and Stiles that sacrificing themselves, temporarily, will have lasting mental effects on them, such as having a permanent darkness around their hearts. Malia tells him that Melissa is gone but she's still alive, so they can still save her. He attempts to train Scott to help him control his new werewolf nature but Scott resists, blaming Derek for everything wrong in his life when Derek had nothing to do with it.
In "Relics", Liam is forced to take action as the Ghost Riders storm the sports field during a lacrosse game.
Derek comes to solve his differences with Argent after he saves Argent's life from a bomb set off by the Nogitsune, and Argent tells Derek they aren't enemies anymore right after the Nogitsune had controlled him to kill the former. Later on, Kate Argent seduced Derek and committed statutory rape. Early on, Kira has an obvious crush on Scott, which he reciprocates. Stiles, throughout Seasons 1 and 2, has an intense, unrequited love for Lydia Martin, having harbored a crush on her since the 3rd grade. Later in the episode, Scott and Lydia are contacted by Stiles through the radio.