Greg Heffley and his family are on their way out of the city. With the cold weather approaching and the stress of the upcoming Christmas holidays, the Heffleys decide to escape to a tropical island resort for some much-needed rest and relaxation. A few days in paradise should work wonders for Greg and his stressed-out family. However, the Heffleys soon discover that paradise is not everything it seems. Sunburn, stomach issues, and poisonous creatures threaten to ruin the family’s vacation. Can their trip be saved, or will this island getaway end in disaster?.