Something is off with Hiro's sense of time. He's constantly late, and almost misses his curfew. Ruli suggests a trip to the library for a change of pace. They meet some unexpected visitors and learn the cause of Hiro's problems.
Digimon are usually invisible
in the human world.
الدّيجيمونات خفيّة عادة في عالم البشر
Digimon sind für gewöhnlich
in der Menschenwelt unsichtbar.
Los Digimon son normalmente invisibles
en el mundo humano.
Los Digimon son normalmente invisibles
en el mundo humano.
De base, dans votre monde,
les Digimon sont à l’état invisible.
Normalmente noi Digimon
siamo invisibili nel mondo umano.
Digimons normalmente são 
invisíveis no mundo humano.
Обычно дигимоны невидимы в мире людей.