Will, once mentioned that the shadow monsters don't like heat.This key information made Eleven and his friends suddenly realize that they had been keeping Will in a cold environment, but instead helped the shadow monster.So, they decided to change their strategy and use light and heat to drive away the monsters in Will's body.

After everyone's joint discussion, they decided to divide their troops into three groups.Eleven and Jim went to the Department of Energy laboratory and entered the underground tunnel to close the entrance; Steve, Dustin, Lucas, and Max entered the underground tunnel and set fire to the place where the monster had made; Joyce, Jonathan and NanQian went to a place unknown to Will and used light and heat to drive away the monsters in Will's body.

However, plans never keep up with changes.Max stayed away all night, making Billy very worried.In order to find his sister, Billy came to Mike's house. Through his handsome appearance, he confused Mike's mother and learned the location of the children's gathering.When he found the cabin, he was surprised to find Steve there.The two clashed as soon as they met, which eventually turned into a fierce fight.Fortunately, Max appeared in time and subdued Billy with a needle, allowing everyone to set off smoothly.

With the joint efforts of everyone, they finally arrived at the Department of Energy laboratory.Eleven and Jim found the entrance and bravely entered the cave.At the entrance, they encountered a powerful shadow monster.Despite facing great danger, Eleven did not flinch. She used her powerful abilities to successfully close the entrance.

As the entrance is closed, the power of the shadow monster gradually dissipates, and the monster in Will's body is also successfully expelled.However, it's not over yet.The shadow monster is still ready to take action in another world, waiting for the opportunity to take revenge.