In Godzilla vs Kong, we see the return of the two main characters from Godzilla: King of the Monsters: Mark (Kyle Chandler) and Madison Russell (Millie Bobby Brown). While Godzilla vs Kong followed Madison's story for Team Godzilla, it did not give us much detail about Mark and his struggles of being a single parent nor did it give any detail as to how much the events in King of the Monsters affected them personally. Luckily for us, the novelization of the movie goes into much more detail with Mark's story.
To recap from what we learned in King of the Monsters, Mark was dealing with a drinking problem he developed after the loss of his son, Andrew. While Madison and Emma were coping with Andrew's death in their own way, Mark's drinking and constant fighting with his wife lead to a divorce. Mark left Monarch afterwards and decided to seclude himself in the wilderness to concentrate on studying animal behavior and taking photos of wild life such as wolves. However, he receives a visit from Dr. Ishiro Serizawa and Dr. Lindsey Graham to persuade him to come back to Monarch to save his wife and daughter from eco-terrorists. On this journey to save his family, Mark also takes a journey from hating Godzilla for taking his son to forgiving Godzilla by the end of it all.
Three years after the battle in Boston, Mark has been searching to find ways to give Madison a regular life after everything she has been exposed to. She deserves to live the rest of her teenage years as a teenager. Go to a regular school, live in a normal house, and having friends her own age. When Mark heard there was an office position open at the Pensacola branch, he asked for a transfer immediately. He thought his dream of giving Madison a regular life was about to come true.
The problem is that she never learned how to interact with peers of her own age. The social order at school is more primal. If you have a single ounce of any weirdness then you are a target for scrutiny. With Emma's reputation of turning coat from a researcher at Monarch to an eco-terrorist hanging over Madison, she was a prime target. The only friend she ever made that was her own age was Josh. Also, thanks to being homeschooled by Emma and being surrounded by Monarch scientists, she feels bored in her classes. Not feeling like she is learning anything new. To add to her stress pile, Madison has developed PTSD ever since Boston. She constantly has nightmares of Ghidorah looming over her and watching her mother get eaten in front of her.
Despite his efforts, Mark could never get Madison to move on from Monarch, Godzilla, and Boston. He is especially irked when he learns that Madison has been listening to a conspiracy podcast called Mad Truth since they keep filling her head with conspiracies on Godzilla and Apex.
While at work, Mark notices on the map that Godzilla's routine check up patterns have been off lately. He could not make out what Godzilla is thinking based on his recent travels. Usually, Godzilla being awake is taken as a sign that another Titan is on the move either disobeying Godzilla's orders or because the Titan has been captured and is calling for his help. This time, however, none of the monsters are awake. They're all quiet. Mark even finds Godzilla's check up at the mouth of the Amazon Basin unusual since Behemoth is nowhere near that location and Rodan does not inhabit Isla De Mara anymore.
After some time, Mark was beginning to believe that perhaps Godzilla was just stretching his legs until a new image of Godzilla has been reported. The photo was taken by a witness on a yacht that was en route from Galveston to Veracruz and reported that he spotted Godzilla heading northeast from the witness's position. Mark triangulates Godzilla heading for Pensacola. He hoped Godzilla would turn back around away from shore as Godzilla has done in the past three years, but his gut was telling him that something changed this time. When Godzilla was twenty miles off shore, Mark contacts command and control and orders for an evacuation.
After Godzilla's attack on the Apex facility in Pensacola, Mark is overwhelmed by news reporters asking questions about the possibility of eco-terrorists controlling Godzilla with another ORCA device and if rumors of Ghidorah still being alive at the North Pole is true. Questions that Mark could not answer. Once he arrived at the relief camp, Mark makes a phone call that he missed expecting to be someone else. However, the call he missed was from the new director of Monarch, Director Guillerman (Lance Reddick). Guillerman filled the role as director after Dr. Serizawa sacrificed his life to save Godzilla. Now, Godzilla has turned from humanity's ally to humanity's enemy. Guillerman noticed Mark predicted Godzilla was going to attack and needed him at Castle Bravo ASAP.
After talking with Director Guillerman, he notices another missed call from Madison's school with a message saying Madison was absent. Mark was able to Madison easily since she had just arrived at the relief camp. Madison tries to reason with her father that Godzilla had to be provoked some how, but Mark didn't want to listen. He did not want her involved and the stress of the media turning Godzilla from ally to enemy is weighing him down. They get into an argument with Mark shutting down Madison's arguments for Godzilla to lash out the way he did. Angry with her father for not trusting her judgement, she decides to return home.
Feeling guilty, Mark returns home with a pizza as a way to make amends. Mark tries to apologize for his behavior earlier due to the stress at the relief camp and wishes for her to not get involved this time, especially after how everything happened. He could not bear to face losing another child if Madison got involved again. On top of that, Mark tells Madison that he has to visit Castle Bravo for a while and this angers her even more. She realized that her father tried to "blackmail" her with his fear and it's not fair to her that she does not get to go. After their bickering, they call a truce.
Mark arrives at Castle Bravo and goes to meet Director Guillerman where he learns about the plan to move Kong to Antarctica for the Hollow Earth mission and Apex's search for a power source that can defeat Godzilla. Mark even knows Dr. Nathan Lind and was shocked that he was even leading the mission despite his awful track record. The more Mark hears about this plan, the more it is starting to sound like one of Madison's theories from the podcast. He tries telling Director Guillerman that they're rushing too quickly into a situation they do not understand and have no knowledge of what Apex will do with this energy once they have it. After having to clean up one mess left by Dr. Serizawa, Mark and Guillerman hope that they don't come across a similar mess.
On the Argo heading for Hong Kong, Mark thinks back to the last time he was there with Emma and how the times were happier back then. If he could experience those days with Emma one more time, he would take it. However, he is not visiting Hong Kong to go to the beach. Godzilla was on his way and moving fast. Other than his attack on the convoy that was escorting Kong, not much happened since then. However, a signal similar to a Titan call was detected and was coming from Apex's headquarters. Not just any Titan call, but the call of King Ghidorah. Mark is not too sure, but tells Guillerman that the signal seems manufactured and synthesized the wrong way in some key areas. By that note, the signal is suspected to be the main reason Godzilla is heading for Hong Kong, but for whatever reason was unknown.