Harley is an engineering whiz who uses her inventions to navigate life as the middle child in a large family of seven kids.
Avid inventor Harley is all set to accept a community award, but must first devise a way to get her family out of the house and to the ceremony on time.
Harley's parents forget her birthday, so she devises a plan to use their guilt as a way to get the ultimate birthday gift.
To raise money to replace her family's broken tablet, Harley decides to rent out the family's couch to a foreign exchange student.
When Harley procrastinates on finishing her Science project, it inadvertently leads to the WIFI going out, leading her entire family to head out to the movies.
Harley decided she's going to create an activity for the annual block party but struggles to find the perfect idea.
Harley uses her creativity to convince her dad to hire her at his marina store. Once there, she unveils her newest invention, the "slushinator."
Instead of including the rest of her siblings, Harley decides to go solo on her Mother's Day Gift idea.
Harley decides to host an outdoor slumber party so she can watch a passing comet with all of her friends.
When Dad goes out of town, Harley must find her mom a new friend after she becomes overly clingy.
When Rachel’s boyfriend Cuff decides to make himself at home in the Diaz house, Harley tries to find a way to get him out.
With basketball season over, Harley helps Georgie secure a spot on the golf team. Meanwhile, mom puts the kids up to a cooking challenge when they complain about her food.
When their parents take off for the weekend, Harley and her siblings are left to fend for themselves. Meanwhile, Rachel uses Harley's help to make her friends jealous
Harley's latest invention is the HarleyCar, a pedicab that can transport kids all over town. But when Ethan becomes an investor, Harley is forced to share the bike with him
Harley and Ethan set out to prove Daphne isn’t as innocent as she seems.
Harley needs to get to Boston for an inventor's contest, but with dad away and mom busy with the rest of the kids, Harley is forced to turn to Rachel for help.
The whole family chips in to give Georgie a last minute quinceañera, while Lewie and Beast track a hurricane headed their way.
The Diaz family is given a once in a lifetime opportunity to star in their own reality show.
