Incidental 40 asks for a milkshake. SpongeBob makes one for him, however, it is frozen solid, prompting a negative reaction from the customer. Mr. Krabs then takes SpongeBob to the Milkshake Academy to learn how to properly make milkshakes from Captain Frostymug.
Even through all of the training, SpongeBob continues making frozen milkshakes and eventually fails. However, after saving Frostymug from a blender, he learns from him how to properly make a milkshake.
SpongeBob then uses his own body to make a milkshake, by which Harold is highly pleased this time.
SpongeBob was going to deliver a Krabby Patty and a milkshake to a local business manager, but he accidentally spills the milkshake all over the floor. SpongeBob promises the manager that he will clean the stain off the floor, unaware that the company has a cleaning robot.
After a major struggle with the robot, SpongeBob and Patrick clean the milkshake stain.