Octo-alert! Lots of things in Numberland have been split into halves, thirds and four equal parts. There's only one block naughty enough to cause such mischief - it's Octonaughty. Octoblock catches up with Octonaughty in The Museum of Numbers as he causes havoc with his new invention, the Fractionator. Octonaughty is splitting things into equal parts to try to steal the Golden Infinity, but how can Octoblock save the day when Octonaughty has the power to split him into four equal parts? 

Thirty-Six and Forty-Five are exploring the Forest of Tens on a special quest. But what is the special something they need to find and bring to Ten? There are plenty of tricky clues to solve along the way before they can complete their magical mission.