Grounded (aka Friends in Need)
Winx Club - Season 1

DESCRIPTION

The Winx girls and the Red Fountain guys have a cleaning party as a ""punishment"" for going to Cloud Tower, when the witches conjure up a minotaur to take them down. The Winx Club is useless without their powers, but defeat the minotaur anyhow. Impressed, Gricelda gives their powers back.