Kendall was feeling down in SCHOOL TRAGEDY -Part 3. Therefore, Megan and Bethany offered Markus the money to speak to Kendall. The two eavesdropped on their conversation, thus finding out that Kendall grew up without mother. However, she eventually found out Markus is already with someone - Jay - and that Megan and Bethany bribed him.
In the hallway, Kendall and her minions confront Markus. She orders them to shoot him to which he dies and Jay falling into sadness. Markus' death also deployed the Red Gun.