The humor of Captain Underpants meets the blockbuster format of Diary of a Wimpy Kid in this laugh-out-loud series about Justin Chase, who is having the Worst. Week. EVER!

Have you ever had a bad week? Justin Chase sure has and THIS is it!

He barely made it through MONDAY, but now it's . . . TUESDAY.

His cat is still missing, probably abducted by aliens. His dad is more embarrassing than ever. He's gone viral online in the worst possible way. And when school picture day collides with the Super Science Spectacular, it's destined to blow up into a hair-raising, teeth-shattering disaster of epic proportions!