Summer Gone, Summer Not - S3.E21

Ned is excited to be starting summer vacation, but is dismayed to find that July and August are missing out on the free gas station calendars everyone in town has, which leads the entire town to think that they're skipping Summer this year. Ned and Newton decide to investigate the missing months and find out that it's because the calendar publisher has lost the two artists that paint the banal scenes for July and August that go in the calendar. Ned and Newton have them quickly replaced, and Summer is saved.