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Prince Henry is a simple man — he just likes to fence and care for his daughter, Princess Rose, who is going through a tough time. So he decides to take her to an American theme park, Once Upon a Time Land. We meet Lacey, who plays Princess Sweet Pea. When Princess Rose meets her, she immediately becomes a big fan, and Lacey ends up waltzing with Henry. Obviously, at the time, Lacey doesn’t know they are real royalty. But the next day, she is pulled aside at work and told the truth about who they are — and that they want Princess Sweet Pea to show them around the park personally.

She does, and they get to talking. It turns out that Rose is deathly afraid of horses, but with Lacey's help, she’s able to conquer that fear and get on the merry-go-round! Impressed, Henry asks if she would be willing to come back with them to his home and help Rose ride a horse. Apparently, it’s a big tradition for the Order of the Lily ceremony. Lacey agrees.

When she gets there, she is constantly catching strays from Henry's mom and this one guy who really hates her. But none of it matters because she's helping Rose with her fear of horses and spending more time with Henry — and the sparks are flying. They even end up kissing when he shows her his special spot.

The Order of the Lily ceremony arrives, and Rose is really nervous. So Lacey rides alongside her, and it’s a big success. But the guy who hates her is furious and tells Lacey, “If you think you’re going to get Henry to fall in love with you, you’re out of your mind. You’re just a theme park princess.”

Things go from bad to worse when Lacey loses her theme park job after a photo leaks of her in her Princess Sweet Pea costume talking to Henry. Why is that a fireable offense? Who can say? Heartbroken, she decides to leave before the ball.

When she goes to return her costume to her old job, her boss tells her she has one more gig — and sends her out. When she does, it turns out the gig is just Henry and Rose. Henry tells her, “I love you. Please come back.” She does.

Cut to six months later: Henry proposes, Lacey says yes, and they kiss.