Adrien was helping with the set up for Marinette's birthday party when an Akuma calling herself Befana, appeared. Calling Marinette a liar and started shooting people with her candys turning them to either angels or stone. Thats when Adrien hides to transforms into Noirebug which he does
She immediately calls for a "Lucky Charm!" Which produces a handheld mirror, immediately getting the idea, Noirebug places the mirror on/in her ribbon (you know the one that makes up her tail/wings) behind her back and approached Befana with her hands out in the open and said "You know attacking innocents is wrong, right?" "Who are you to pass judgment on me? Little kittybug, stone for you." Only at the last second Noirebug pulled out the mirror and reflected the blast at Befana, turning her to stone. Allowing Noirebug to "Cataclysms!" The Akuma object.
After the party Plagg and Tikki gives Adrien a Kwagatama.