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In Rumer Willis' upcoming cameo on Hawaii Five-0, her character quickly shifts from flirting with one of her customers to fearing for her life. ET gives you an exclusive sneak peek at the upcoming episode.

Willis, the daughter of now-divorced couple Bruce Willis and Demi Moore, plays a bank teller in her upcoming Five-0 cameo, and is just about to seal a date with one of the bank's patrons when a group of masked gunmen storm into the bank.

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As the clip ends, one of the bank robbers points his gun at Willis' character and commands her to fill a duffel bag with money.

The 24-year-old actress has performed cameos on an array of television shows in her acting career, including CSI: NY and most recently the Comedy Central series Workaholics. While most of her appearances on TV have been cameos, Willis recently held a role on 90210 in its second season.

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Watch a sneak peek of Willis' Hawaii Five-0 cameo above and find out if her character makes it out of the bank in one piece on Monday at 10 p.m. on CBS.