Parent-child bonding day: the secret of happiness at Hellio

About Bat info source: Hellio via YouTube

A day of bonding between parents and children: the secret of happiness at Hellio! It's 9am. In the corridors of Hellio, little collaborators like no others enter. They are between 1 and 10 years old and came to spend an exceptional day. This is the first time they discover the place where their parents work.