When Danny's after-school ghost activities cause his already mediocre grades to slip, he calls upon his friends Sam and Tucker to help him efficiently manage his time. While on a scheduled extra credit biology assignment to study a rare gorilla in captivity, Danny finds himself hunted by Skulker - an armored ghost determined to add Danny to his collection of rare and unusual poltergeists.
Danny needs quick cash to buy cool clothes for his first "A-list" homecoming party at football-jock Dash Baxter's house. What better way, then, than selling all your parents' ghost-infected, mechanized junk at a yard sale? It's a great idea until Nicolai Technus, Ghost Master of Technology, summons all ghost gadgets to morph into a giant killer techno-robot. Danny foils Technus' evil plan with the help of Tucker and Sam, while learning that there are some things that money
can't buy - like true friendship.
can't buy - like true friendship.After a series of humiliating run-ins with Dash (the school bully), Danny uses his powers to get revenge. Unfortunately, this triggers the ghost of Poindexter - a kid who was shoved in his locker so many times, he haunts it to this day. Danny must battle this ghostly defender of nerds and geeks, while at the same time proving he's not the bully Poindexter thinks he is.