An animated comedy about two-step brothers who find inventive things to do on each day of their summer vacation such as building a roller coaster out of materials you would find in your everyday home like popsicle sticks, indoor plumbing, etc. Unbeknownst to them, their pet platypus, Perry, leads a double life as a secret agent.

在获得新技能后，跟踪Gretel和她的宠物仓鼠。现在，保护哥哥凯文必须弄清楚如何与格雷特和她的宠物合作，保护他们的城市免受神秘的危险。