Stranger Things 4: Eleven, Mike, Will, Lucas, Max, Dustin are back with their 'nerd club'; see pics

Mike is set to break any rules to protect his dear ones.

Eddie (Joseph Quinn) is joining the senior 'nerd club' with Steve (Joe Keery), Nancy (Natalia Dyer) and Robin (Maya Hawke) in the upcoming part.

Seems like Lucas's (Caleb McLaughlin) badass sister Erica (Priah Ferguson) is officially part of the group now.

Jim Hopper's (David Harbour) look is the talk of the town.

Joyce (Winona Ryder) and Murray (Brett Gelman) embarks on a journey together to find something important.

Meanwhile, Robin and Nancy look like a dream team in the forthcoming instalment.