Cosmo has been a devoted older brother to his human, Max, for a lifetime of trick-or-treating, movie watching, and family dance nights. And now Max is convinced that dance is the key to keeping his arguing parents--and his whole family--together. Max thinks that if he and Cosmo can win a canine freestyle competition (prize: a role in a movie!), Mom and Dad will remember all the good times they've had together and see that Max and Cosmo should never be separated. With help from veteran dog trainer Uncle Reggie, anxious Max and creaky Cosmo find a routine that is its own kind of unforgettable and discover that love can improvise its way around even the trickiest obstacles. Publisher's description.

First published by Nosy Crow (U.K.) 2019.