What if you could live the best summer of your life over... and over... and over?
When Ivan visits his grandfather, George, for the summer, George barely notices him. George doesn't like kids. And he doesn't like being called Grandpa, or Gramps, or Granddad. George just wants to be left alone in his laboratory, where he invents amazing things.
But within a few days, they become friends. It turns out to be Ivan's best summer ever... until something terrible happens. Can Ivan use his magic vest to travel back in time and stop the disaster?

• We started tracking this book on March 13, 2014.
• This book was $0.99 when we started tracking it.
• The price of this book has changed 27 times in the past 4,333 days.
• The current price of this book is FREE last checked one hour ago.
• The lowest price to date was FREE last reached on January 21, 2026.
• This book has been FREE 14 times since we started tracking it.
• The highest price to date was $0.99 last reached on April 16, 2025.
• This book has been $0.99 14 times since we started tracking it.
• This book is currently at its lowest price since we started tracking it.

• Children's eBooksScience Fiction, Fantasy & Scary StoriesScience Fiction
• Children's eBooksLiterature & Fiction

• Publication Date: April 28, 2013
• Text-to-Speech: Disabled
• Lending: Disabled
• Print Length: 37 Pages
• File Size: 315 KB