'Pop' Wonder is the owner of the Wonder Circus, which arrives at a local town with its featured attraction, Jumbo the elephant. The circus is however in debt as he has gambled the earnings on
craps games. His daughter, Kitty Wonder, is approached by three creditors who demand repayment. She promises that the circus will be sold out tonight so they will earn their money. Meanwhile, a mysterious newcomer named Sam arrives and is hired as a tent hand. At the circus, various specialty acts perform including Jumbo. While changing costumes, Kitty and Pop learn that two of their acts are leaving as the John Noble Circus will pay them. After Jumbo's act, Pop calls for the Great Mantino, a high-wire act. Mantino does not show up when his name is called, but eventually he does. When the act is done, Sam reveals himself as the performer as the Mantino quit for the Noble Circus. Impressed with Sam's performance, Pop hires him. To celebrate, Pop takes Sam to a craps game, where he has already gambled the earnings. Kitty finds her father at a saloon and plays a game herself to win the money back. During their carriage ride home, Sam states he switched the dice with loaded ones. Back at the circus, Kitty pays the performers, though she has forgotten about the three creditors. She tries once more to assuage the situation, but unpersuaded, one of them threatens to have the circus foreclosed. Luckily, Jumbo fakes a rampage, causing the creditors to run away. As it turns out, Sam is the son of rival circus mogul John Noble, whose ambition is to buy the Wonder Circus for himself. Noble enlists Sam to infiltrate their rival and secretly buy Pop's
IOUs, and therefore have the creditors grant him control of the circus. Back on the circus grounds, Pop tries to shoot his longtime fiancée Lulu out of a cannon. Sam and Kitty begin to fall for each other. Later that night, a severe rainstorm rips open the big tent, causing the aerial performers including Kitty to become stuck on the rigs. Sam guides the crew to help the performers jump and land on a catch net. Afterwards, Pop and Lulu agree to marry. Sam consoles Kitty, who is shaken by the near-death experience. On the day of Pop and Lulu's wedding, John Noble arrives, stating he has purchased Pop's debt for repayment, therefore he owns the Wonder Circus. He casually divulges that Sam is his son. Due to this, Kitty is devastated and Pop decides to retire. Jumbo is soon taken by Noble's men. The next morning, Kitty, Pop and Lulu form their own traveling carnival. Sam, still in love with Kitty, finds her and expresses guilt for his actions, stating he has left his father. He states he can help revive the Wonder Circus, and as proof, he returns Jumbo back to them. Together, all four of them perform. ==Cast==