Journey to the Center of SpongeBob

Narcotic has genetically engineered a sentient single-celled bacteria that has infected SpongeBob. The bacteria, Phloem Joe, is getting ready to kill SpongeBob as he reproduces at an alarming rate. The only way to deal with the bacteria is to shrink down into microscopic size, and fight Phloem Joe and his clones head on while Kowalski works on an antibiotic.