Mom is behaving strangely-even for her, Will realizes, and the inquisitive teen can't rest until he discovers why.
So begins a time travel adventure for Will and his sister, Halia-adventure Will has longed for but never thought possible, and that Hal would rather avoid.
With the help of their next-door-neighbor and an unlikely feline ally (their cat, Chester), Will and Hal discover that their perpetually sunny mom is traveling back in time to relive her children's younger days and correct what s.