It is Adrien's birthday and Marinette is struggling to give him the present she made for him. When Adrien's father won't allow Adrien to have a birthday party, his best friend Nino becomes angry about how unfair he's being towards Adrien. Claiming that all parents want to stop kids from having fun, Nino becomes influenced by Hawk Moth's power and turns into 'Bubbler', a villain who sends all the parents into outer space through his bubbles.