The Trouble With Nothing is the very first episode. It originally aired on August 4th, 2015.
[Laura] All the things dissapeared.
[Alice] And we had no idea who was doing it.
[Jonathan] It was the same thing happening every time. Zero was there.
[Alice] Where's that Zero? There and there.
[Laura] That was the pattern. Zero made things dissapear.
[Oliver] And then I chased him, and I tripped over, and Zero dissapear.
[Jonathan] But we managed to get one of everything back.
[Alice] Or sometimes three of some thing.
[Laura] And after a long struggle, everything was back to normal.
[Oliver] Did the trick.
Numberjacks: All of them
Agents: 16, 33, 42, 68