Dennis Predicts

Dennis Predicts is the seventy seventh episode from Season 1.

Plot
One day, Dennis is playing kickball, and once he tries to catch the football being used as a kickball, the ball hits him in the head. On his way home, Dennis stops outside Mr. Wilson's house, and has a vision of Mr. Wilson in a flood, saying "Dennis! I will never doubt you again!".

Dennis leaves his friends behind and tells Mr. Wilson about the vision he had, only for Mr. Wilson to say he had a dream "where there were no little boys". Mr. Wilson goes down the basement for sleep, little realizing the basement was flooding due to a leak, only for Mr. Wilson to realise Dennis' "dream" came true.

At home, Dennis tells his parents all about "seeing things in his head", only to envision Henry in a pile of garbage, exclaiming "Dennis! You were right!". Henry claims Dennis got it from Alice's side of the family. Later, when Henry is taking the garbage out, he trips on Dennis' skateboard and lands in a dumpster, and into the garbage truck, exclaiming exactly the words Dennis "dreamed" him saying.

On the school bus, Dennis tells Joey and Margaret, the latter of whom is wearing a new green dress, that Henry believes him to have psycho powers, only for Margaret to correct him by saying "psychic". This gives Dennis the vision of Margaret covered in sticky bonbon shouting "I'll get you, Dennis!". This prompts Dennis to tell Margaret that she shouldn't have worn that dress she's wearing since they're going to the candy factory.

When they get to the candy factory, the entire class is shown how bonbons are made. Margaret wants to see for herself, only to land on the conveyor belt and get bonbonned herself. Once she's helped up, she proves Dennis' prediction correct, crying "I'll get you for this, Dennis!", puzzling Dennis.

The next day, Dennis is on the news, being asked what he'll predict. Once he's about to predict something, the football hits him in the head, causing him to lose his psychic powers, only for Dennis to get up and "predict" the town would be "covered in a snowstorm in June". When June comes around, everyone is wearing warm clothes during a heatwave, proving Dennis' prediction wrong.

When everyone arrives at the Mitchells' place, they want to interview Dennis to see what went wrong. Dennis just says "I'll never play kickball again."