During the 10th, 11th and 12th night in Endling, you will be able to explore the factory. There you will find a new skill for young foxes - Squeeze through. As well as a vending machine and candy bar.
At 10 o'clock at night go explore the entire factory site - all paths from its western side should be unlocked.
When walking around the factory, watch out for patrolling men. Move slowly and memorize their route carefully to plan your escape.
On one of the bridges leading to the factory you will gain another skill - Squeeze through. You can read more about it on the Cub skills - how to unlock? page.
If you haven't gone through the entire factory yet, continue exploring the area. Inside you'll find an old vending machine, and a can of food that will satisfy half of your cubs' hunger bar.
In a large trash container, one of your cubs will find a candy bar.
Following the trail of the missing fox, you will come across a new lair. You will also unlock a new area. Near this lair you will find eggs in the trees.