One of the members gets addicted to discord, until eventually a growth with the discord logo starts growing on him. It starts spreading until eventually he turns into a discord like monster. Through combat they get the growth to come off and the member returns to normal form, but they still have to fight the discord logo/growth itself. They defeat it through combat

Or, second idea which I personally like better, they’re testing each other via discord, but one the clients had a virus, which caused the app itself to come alive and start attacking the members. They have to fight it off, and they have to kill it by reaching the phone that had the discord virus and deleting it. Or just fighting it off

Pretty bad idea, it’s late and my brain isn’t functioning at it’s full capacity