Why did Marshall leave PAW Patrol?

Once topside, Ryder explains that Marshall ran away because he feels like no one wants him around, but the pups says that they *do* want Marshall around and say nice things about him (such as how he's funny, how he loves to plays, how he's really cool, and uses his water cannons on hot days and Marshall’s clumsiness is entertaining). They all agree that they need to get him back and tell him how valuable he is to the team, Ryder passes out orders: Chase will use his spy drone UAV to look for Marshall on the ground while Skye looks for him around Jake's Mountain. The other pups will split up to see if they can find Marshall at any of their usual hangouts. With that, the team deploys and heads off to find Marshall.

In the woods, Marshall awakens from a nap in his tent, and tries to play some games, even trying hide-and-seek with a rabbit.

Meanwhile, Rubble arrives at Farmer Yumi's to look for Marshall, but mistakes a cow for Marshall due to the cow's spots. Zuma tries looking for Marshall on the water, even asking Wally if he's seen Marshall, but comes up empty-pawed as well. After Zuma contacts Ryder to tell him that he has not found Marshall yet and Ryder tells him to keep looking, Zuma hears a rumble of thunder, and sees a large storm front approaching Adventure Bay and becomes very worried as the sky starts to turn an ominous purple, as the storm moves in. At Katie's Pet Parlor, Rocky tries looking for Marshall there, but ends up falling into the bathtub, discovering that what he thought was Marshall was just a young goat, leaving Katie to make a joke about it. As for Skye, despite the sky getting darker as the storm approaches, she heads over the woods and soon spots Marshall's firetruck parked on a footpath through the trees. Contacting Ryder to let him know, Ryder dispatches Chase to the woods to assist Skye with his spy drone UAV.

Once he arrives, he gets his control console up and launches his drone. It is not long before the drone finds Marshall, but he mistakes it for mosquitoes since it keeps staying out of his eyesight. Marshall soon follows the rabbit to her burrow, where he finds she has four babies. No sooner does he see that when the sky opens up with rumbles of thunder, rain, and lightning bolts arcing from the clouds to the ground. The lightning and thunder spooks the rabbits and one of the babies flees while the other babies and mother rabbit retreat into the burrow. Marshall goes after the baby rabbit who fled into the woods, barely avoiding when a lightning bolt strikes the tree the burrow sits under and severs the trunk. Marshall avoids being crushed as the tree falls over, but is horrified to see the rabbits trapped in the burrow.

With the sky still filled with storm clouds, Marshall struggles to lift the tree by a branch, but realizes he cannot lift it on his own and needs the PAW Patrol. Enabling his pup-tag again, he starts to contact Ryder to let him know, but is spooked when Chase arrives via his zip line so soon after Marshall sent out the call for help. As Chase's spy drone joins him, Ryder and Rubble arrive soon after and Marshall explains the situation. Ryder has Chase use his drone to go find the baby rabbit that ran off, Rubble to get his rig to use the grapple crane to lift the tree off the burrow and Marshall, since the severed trunk was still glowing from the heat of the lightning strike, to get his gear to extinguish the embers. Marshall soon has the trunk extinguished, Rubble has the tree moved off the burrow, and Chase's drone soon finds the baby that ran off, allowing it to be reunited with her family.

Afterwards, once the rest of the team shows up and the storm has passed, they ask Marshall why he ran away. After loading his stuff back into his firetruck, he explains how he heard them saying how clumsy and silly he is and felt they did not want him around anymore. Rubble explains the whole misunderstanding that what they said was regarding the bad guy on Apollo and Ryder assures him that he is still a valued member of the PAW Patrol and they would not be the same without him. As the rabbits show up to offer their gratitude to Marshall and Ryder gives Marshall a good scratch behind the ear, the other pups cheer for Marshall. The episode ends as Rubble reminds Marshall that he owes them a new volleyball, leaving him puzzled as he had no idea he ran over and damaged the other one when he left the Lookout earlier.