While her house is being renovated Aunt Martha is staying with her nephews. Between the morning aerobics, grocery shopping, gardening and cleaning sessions, her stay is turning into a bit of a nightmare for Pat and Stan. Professor Chichi offers his help to Stan as it's the perfect opportunity for the Professor to test his latest invention: the Psycho-switch! This revolutionary device can influence peoples' behaviour and change their personality. Stan thinks this can potentially turn Aunt Martha into a "cool" aunt but the invention backfires and it's Stan who becomes the guinea pig of this new invention!
| Name | Type | Role | |
|---|---|---|---|
| Joël Bassaget | Writer | ||
| Pierre Coffin | Director |