After his time-traveling deeds cause the destruction of the world by preventing Harold and George from creating Captain Underpants, Tippy Tinkletrousers tries to use his time machine to correct the situation, but it proves to be difficult to fix.
year: 2013
call number/section: 10
subjects: captain underpants (fictitious character), juvenile fiction, time travel, bullying, schools, heroes, fiction, bullies, humorous stories, captain underpants (fictional character), school stories, heroes and heroines, humorous fiction, humorous fiction